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404 - Not found

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Beta Features

Using Supervisor as a Process Manager

Warning

Do not use it in production environments yet! It has not been tested thoroughly yet.

Supervisor is process manager written in Python. The main advantage is that it take care about processes, so if bot process exit with failure (exit code different than 0), supervisor try to run it again. Another advantage is that it not require writing PID files.

This was tested on Ubuntu 18.04.

Install supervisor. supervisor_twiddler is extension for supervisor, that makes possible to create process dynamically. (Ubuntu supervisor package is currently based on Python 2, so supervisor_twiddler must be installed with Python 2 pip.)

apt install supervisor python-pip
+pip install supervisor_twiddler
+

Create default config /etc/supervisor/conf.d/intelmq.conf and restart supervisor service:

[rpcinterface:twiddler]
+supervisor.rpcinterface_factory=supervisor_twiddler.rpcinterface:make_twiddler_rpcinterface
+
+[group:intelmq]
+

Change IntelMQ process manager in the global configuration:

process_manager: supervisor
+

After this it is possible to manage bots like before with intelmqctl command.

Using AMQP Message Broker

Starting with IntelMQ 1.2 the AMQP protocol is supported as message queue. To use it, install a broker, for example RabbitMQ. The configuration and the differences are outlined here. Keep in mind that it is slower, but has better monitoring capabilities and is more stable. The AMQP support is considered beta, so small problems might occur. So far, only RabbitMQ as broker has been tested.

You can change the broker for single bots (set the parameters in the runtime configuration per bot) or for the whole botnet (using the global configuration).

You need to set the parameter source_pipeline_broker/destination_pipeline_broker to amqp. There are more parameters available:

Bug

This section of the documentation is currently incomplete and will be updated later.

destination_pipeline_broker

(required, string) "amqp"

destination_pipeline_host

() (default: '127.0.0.1')

destination_pipeline_port

() (default: 5672)

destination_pipeline_username

()

destination_pipeline_password

()

destination_pipeline_socket_timeout

() (default: no timeout)

destination_pipeline_amqp_exchange

() Only change/set this if you know what you do. If set, the destination queues are not declared as queues, but used as routing key. (default: '').

destination_pipeline_amqp_virtual_host

() (default: '/')

source_pipeline_host

() (default: '127.0.0.1')

source_pipeline_port

() (default: 5672)

source_pipeline_username

()

source_pipeline_password

()

source_pipeline_socket_timeout

() (default: no timeout)

source_pipeline_amqp_exchange

() Only change/set this if you know what you do. If set, the destination queues are not declared as queues, but used as routing key. (default: ['']).

source_pipeline_amqp_virtual_host

() (default: '/')

intelmqctl_rabbitmq_monitoring_url

() string, see below (default: "http://{host}:15672")

For getting the queue sizes, intelmqctl needs to connect to the monitoring interface of RabbitMQ. If the monitoring interface is not available under http://{host}:15672 you can manually set using the parameter intelmqctl_rabbitmq_monitoring_url. In a RabbitMQ's default configuration you might not provide a user account, as by default the administrator (guest:guest) allows full access from localhost. If you create a separate user account, make sure to add the tag "monitoring" to it, otherwise IntelMQ can't fetch the queue sizes.

Setting the statistics (and cache) parameters is necessary when the local redis is running under a non-default host/port. If this is the case, you can set them explicitly:

statistics_database

() 3

statistics_host

() "127.0.0.1"

statistics_password

() null

statistics_port

() 6379

Multithreading

First of all: Do not use it in production environments yet! There are a few bugs, see below

Since IntelMQ 2.0 it is possible to provide the following runtime parameter:

instances_threads

Set it to a non-zero integer, then this number of worker threads will be spawn. This is useful if bots often wait for system resources or if network-based lookups are a bottleneck.

However, there are currently a few cavecats:

  • This is not possible for all bots, there are some exceptions (collectors and some outputs), see the FAQ for some reasons.
  • Only use it with the AMQP pipeline, as with Redis, messages may get duplicated because there's only one internal queue
  • In the logs, you can see the main thread initializing first, then all of the threads which log with the name [bot-id].[thread-id].
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Common Problems

IntelMQ

Permission denied when using Redis Unix socket

If you get an error like this:

intelmq.lib.exceptions.PipelineError: pipeline failed - ConnectionError('Error 13 connecting to unix socket: /var/run/redis/redis.sock. Permission denied.',)
+

Make sure the intelmq user as sufficient permissions for the socket.

In /etc/redis/redis.conf (or wherever your configuration is), check the permissions and set it for example to group-writeable:

unixsocketperm 770
+

And add the user intelmq to the redis-group:

usermod -aG redis intelmq
+

My bot(s) died on startup with no errors logged

Rather than starting your bot(s) with intelmqctl start, try intelmqctl run [bot]. This will provide valuable debug output you might not otherwise see, pointing to issues like system configuration errors.

Orphaned Queues

This section has been moved to the Management Guide.

Multithreading is not available for this bot

Multithreading is not available for some bots and AMQP broker is necessary. Possible reasons why a certain bot or a setup does not support Multithreading include:

  • Multithreading is only available when using the AMQP broker.
  • For most collectors, Multithreading is disabled. Otherwise this would lead to duplicated data, as the data retrieval is not atomic.
  • Some bots use libraries which are not thread safe. Look a the bot's documentation for more information.
  • Some bots' operations are not thread safe. Look a the bot's documentation for more information.

If you think this mapping is wrong, please report a bug.

IntelMQ API

IntelMQCtlError

If the command is not configured correctly, you will see exceptions on startup like this:

intelmq_manager.runctl.IntelMQCtlError: <ERROR_MESSAGE>
+

This means the intelmqctl command could not be executed as a subprocess. The <ERROR_MESSAGE> should indicate why.

Access Denied / Authentication Required "Please provide valid Token verification credentials"

If you see the IntelMQ Manager interface and menu, but the API calls to the back-end querying configuration and status of IntelMQ fail with "Access Denied" or "Authentication Required: Please provide valid Token verification credentials" errors, you are maybe not logged in while the API requires authentication.

By default, the API requires authentication. Create user accounts and login with them or - if you have other protection means in place - deactivate the authentication requirement by removing or renaming the session_store parameter in the configuration.

Internal Server Error

There can be various reasons for internal server errors. You need to look at the error log of your web server, for example /var/log/apache2/error.log or /var/log/httpd/error_log for Apache 2. It could be that the sudo-setup is not functional, the configuration file or session database file can not be read or written or other errors in regards to the execution of the API program.

Can I just install it from the deb/rpm packages while installing IntelMQ from a different source?

Yes, you can install the API and the Manager from the deb/rpm repositories, and install your IntelMQ from a somewhere else, e.g. a local repository. However, knowledge about Python and system administration experience is recommended if you do so.

The packages install IntelMQ to /usr/lib/python3*/site-packages/intelmq/. Installing with pip results in /usr/local/lib/python3*/site-packages/intelmq/ (and some other accompaning resources) which overrides the installation in /usr/lib/. You probably need to adapt the configuration parameter intelmq_ctl_cmd to the /usr/local/bin/intelmqctl executable and some other tweaks.

sqlite3.OperationalError: attempt to write a readonly database

SQLite does not only need write access to the database itself, but also the folder the database file is located in. Please check that the webserver has write permissions to the folder the session file is located in.

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Configuring IntelMQ API

Depending on your setup you might have to install sudo to make it possible for the intelmq-api to run the intelmq command as the user-account usually used to run intelmq (which is also often called intelmq).

intelmq-api is configured using a configuration file in json format. intelmq-api tries to load the configuration file from /etc/intelmq/api-config.json and ${PREFIX}/etc/intelmq/api-config.json, but you can override the path setting the environment variable INTELMQ_API_CONFIG. (When using Apache, you can do this by modifying the Apache configuration file shipped with intelmq-api, the file contains an example)

When running the API using hug, you can set the environment variable like this:

INTELMQ_API_CONFIG=/etc/intelmq/api-config.json hug -m intelmq_api.serve
+

The default configuration which is shipped with the packages is also listed here for reference:

{
+    "intelmq_ctl_cmd": ["sudo", "-u", "intelmq", "intelmqctl"],
+    "allowed_path": "/opt/intelmq/var/lib/bots/",
+    "session_store": "/etc/intelmq/api-session.sqlite",
+    "session_duration": 86400,
+    "allow_origins": ["*"]
+}
+

On Debian based systems, the default path for the session_store is /var/lib/dbconfig-common/sqlite3/intelmq-api/intelmqapi, because the Debian package uses the Debian packaging tools to manage the database file.

The following configuration options are available:

  • intelmq_ctl_cmd: Your intelmqctl command. If this is not set in a configuration file the default is used, which is ["sudo", "-u", "intelmq", "/usr/local/bin/intelmqctl"] The option "intelmq_ctl_cmd" is a list of strings so that we can avoid shell-injection vulnerabilities because no shell is involved when running the command. This means that if the command you want to use needs parameters, they have to be separate strings.
  • allowed_path: intelmq-api can grant read-only access to specific files - this setting defines the path those files can reside in.
  • session_store: this is an optional path to a sqlite database, which is used for session storage and authentication. If it is not set (which is the default), no authentication is used!
  • session_duration: the maximal duration of a session, its 86400 seconds by default
  • allow_origins: a list of origins the responses of the API can be shared with. Allows every origin by default.

Permissions

intelmq-api tries to write a couple of configuration files in the ${PREFIX}/etc/intelmq directory - this is only possible if you set the permissions accordingly, given that intelmq-api runs under a different user. The user the API run as also needs write access to the folder the session_store is located in, otherwise there will be an error accessing the session data. If you\'re using the default Apache 2 setup, you might want to set the group of the files to www-data and give it write permissions (chmod -R g+w <directoryname>). In addition to that, the intelmq-manager tries to store the bot positions via the API into the file ${PREFIX}/etc/intelmq/manager/positions.conf. You should therefore create the folder ${PREFIX}/etc/intelmq/manager and the file positions.conf in it.

Adding a user

If you enable the session_store you will have to create user accounts to be able to access the API functionality. You can do this using intelmq-api-adduser:

intelmq-api-adduser --user <username> --password <password>
+

A note on SELinux

On systems with SELinux enabled, the API will fail to call intelmqctl. Therefore, SELinux needs to be disabled:

setenforce 0
+

We welcome contributions to provide SELinux policies.

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Configuring IntelMQ Manager

In the file /usr/share/intelmq-manager/html/js/vars.js set ROOT to the URL of your intelmq-api installation - by default that's on the same host as intelmq-manager.

Configuration Paths

The IntelMQ Manager queries the configuration file paths and directory names from intelmqctl and therefore any global environment variables (if set) are effective in the Manager too. The interface for this query is intelmqctl debug --get-paths, the result is also shown in the /about.html page of your IntelMQ Manager installation.

CSP Headers

It is recommended to set these two headers for all requests:

Content-Security-Policy: script-src 'self'
+X-Content-Security-Policy: script-src 'self'
+

Security considerations

Never ever run intelmq-manager on a public webserver without SSL and proper authentication!

The way the current version is written, anyone can send a POST request and change intelmq's configuration files via sending HTTP POST requests. Intelmq-manager will reject non JSON data but nevertheless, we don't want anyone to be able to reconfigure an intelmq installation.

Therefore you will need authentication and SSL. Authentication can be handled by the intelmq-api. Please refer to its documentation on how to enable authentication and setup accounts.

Never ever allow unencrypted, unauthenticated access to IntelMQ Manager!

Docker: Security headers

If you run our docker image in production, we recommend you to set security headers. You can do this by creating a new file called example_config/nginx/security.conf in the cloned intelmq-docker repository.

Write the following inside the configuration file, and change the http(s)://<your-domain> to your domain name.

server_tokens off; # turn off server_token, instead of nginx/13.2 now it will only show nginx
+add_header X-Frame-Options SAMEORIGIN; # https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Frame-Options
+add_header X-Content-Type-Options nosniff; # https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Content-Type-Options
+add_header X-XSS-Protection "1; mode=block"; # https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-XSS-Protection
+add_header Content-Security-Policy "script-src 'self' 'unsafe-inline' http(s)://<your-domain>; frame-src 'self' http(s)://<your-domain>; object-src 'self' http(s)://<your-domain>"; # https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP
+

After you created the file, edit the docker-compose.yml and mount it to the nginx with

volumes:
+  - ./example_config/nginx/security.conf:/etc/nginx/conf.d/security.conf
+

IMPORTANT Mount the exact name & not the directory, because otherwise you would overwrite the whole directory and the other files would be gone inside the container.

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Configuring IntelMQ

Directories

LSB

If you installed the packages, standard Linux paths (LSB paths) are used:

  • /etc/intelmq/ (configurations)
  • /var/log/intelmq/ (logs)
  • /var/lib/intelmq/ (local states)
  • /var/run/intelmq/ (PID files)

Otherwise, the configuration directory is /opt/intelmq/etc/. Using the environment variable INTELMQ_ROOT_DIR allows setting any arbitrary root directory.

You can switch this by setting the environment variables INTELMQ_PATHS_NO_OPT and INTELMQ_PATHS_OPT, respectively.

  • When installing the Python packages, you can set INTELMQ_PATHS_NO_OPT to something non-empty to use LSB-paths.
  • When installing the deb/rpm packages, you can set INTELMQ_PATHS_OPT to something non-empty to use /opt/intelmq/ paths, or a path set with INTELMQ_ROOT_DIR.

The environment variable ROOT_DIR is meant to set an alternative root directory instead of /. This is primarily meant for package build environments an analogous to setuptool's --root parameter. Thus it is only used in LSB-mode.

Environment Variables

Name Type Description
INTELMQ_PATHS_OPT
INTELMQ_PATHS_NO_OPT
INTELMQ_ROOT_DIR
ROOT_DIR

Configuration Files

runtime.yaml

This is the main configuration file. It uses YAML format since IntelMQ 3.0. It consists of two parts:

  • Global Configuration
  • Individual Bot Configuration

Warning

Comments in YAML are currently not preserved by IntelMQ (known bug #2003).

Example runtime.yaml configuration file is installed by the tool intelmqsetup. If this is not the case, make sure the program was run. It is shipped preconfigured with 4 collectors and parsers, 6 common experts and one output bot. The default collector and the parser handle data from malware domain list, the file output bot writes all data to one of these files (based on your installation):

  • /opt/intelmq/var/lib/bots/file-output/events.txt

  • /var/lib/intelmq/bots/file-output/events.txt

The runtime.yaml configuration is divided into two sections:

  • Global configuration which is applied to each bot.
  • Individual bot configuration which overloads the global configuration and contains bot specific options.

Example configuration snippet:

global: # global configuration section
+  # ...
+  http_timeout_max_tries: 3
+  http_timeout_sec: 30
+  http_user_agent: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2228.0 Safari/537.36
+  http_verify_cert: true
+
+blocklistde-apache-collector: # individual bot configuration section
+  group: Collector
+  name: Blocklist.de Apache List
+  module: intelmq.bots.collectors.http.collector_http
+  description: Blocklist.de Apache Collector fetches all IP addresses which have been reported within the last 48 hours as having run attacks on the service Apache, Apache-DDOS, RFI-Attacks.
+  parameters:
+    http_url: https://lists.blocklist.de/lists/apache.txt
+    name: Blocklist.de Apache
+    rate_limit: 3600
+    http_verify_cert: false # overriding the global configuration for this particular bot
+

Global Configuration

The global configuration parameters apply to all bots, however they can be overridden in the individual bot configuration.

Logging

The logging can be configured with the following parameters:

logging_handler

(required, string) Allowed values are file or syslog.

logging_level

(required, string) Allowed values are CRITICAL, ERROR, WARNING, INFO or DEBUG. Defines the system-wide log level that will be use by all bots and the intelmqctl tool. We recommend logging_level WARNING for production environments and INFO if you want more details. In any case, watch your free disk space!

logging_path

(required, string) When the logging_handler is file this parameter is used to set the logging directory for all the bots as well as the intelmqctl tool. Defaults to /opt/intelmq/var/log/ or /var/log/intelmq/ respectively.

logging_syslog

(required, string) When the logging_handler is syslog. Either a list with hostname and UDP port of syslog service, e.g. ["localhost", 514] or a device name/path. Defaults to /var/log.

Log Rotation

To rotate the logs, you can use the standard Linux-tool logrotate. An example logrotate configuration is given in contrib/logrotate/ and delivered with all deb/rpm-packages. When not using logrotate, IntelMQ can rotate the logs itself, which is not enabled by default! You need to set both values.

logging_max_size

(optional, integer) Maximum number of bytes to be stored in one logfile before the file is rotated. Defaults to 0 (log rotation disabled).

logging_max_copies

(optional, integer) Maximum number of logfiles to keep. Compression is not supported. Default is unset.

Some information can as well be found in Python's documentation on the used RotatingFileHandler.

Error Handling

error_log_message

(required, boolean) Whether to write the message (Event/Report) to the log file in case of an error.

error_log_exception

(required, boolean) Whether to write an error exception to the log file in case of an error.

error_procedure

(required, string) Allowed values are stop or pass. In case of an error, this option defines the procedure that the bot will adopt. Use the following values:

  • stop - stop bot after retrying X times (as defined in error_max_retries) with a delay between retries (as defined in error_retry_delay). If the bot reaches the error_max_retries value, it will remove the message from the pipeline and stop. If the option error_dump_message is also enable, the bot will dump the removed message to its dump file (to be found in var/log).

  • pass - will skip this message and will process the next message after retrying X times, removing the current message from pipeline. If the option error_dump_message is also enable, then the bot will dump the removed message to its dump file. After max retries are reached, the rate limit is applied (e.g. a collector bot fetch an unavailable resource does not try forever).

error_max_retries

(required, integer) In case of an error, the bot will try to re-start processing the current message X times as defined by this option.

error_retry_delay

(required, integer) Defines the number of seconds to wait between subsequent re-tries in case of an error.

error_dump_message

(required, boolean) Specifies if the bot will write queued up messages to its dump file (use intelmqdump to re-insert the message).

If the path _on_error exists for a bot, the message is also sent to this queue, instead of (only) dumping the file if configured to do so.

Miscellaneous

load_balance

(required, boolean) this option allows you to choose the behavior of the queue. Use the following values:

  • true - splits the messages into several queues without duplication
  • false - duplicates the messages into each queue - When using AMQP as message broker, take a look at the multithreading{.interpreted-text role="ref"} section and the instances_threads parameter.

rate_limit

(required, integer) time interval (in seconds) between messages processing. int value.

ssl_ca_certificate

(optional, string) trusted CA certificate for IMAP connections (supported by some bots).

source_pipeline_broker

(optional, string) Allowed values are redis and amqp. Selects the message broker IntelMQ should use. As this parameter can be overridden by each bot, this allows usage of different broker systems and hosts, as well as switching between them on the same IntelMQ instance. Defaults to redis.

destination_pipeline_broker

(required, string) See source_pipeline_broker.

source_pipeline_host

(required, string) Hostname or path to Unix socket that the bot will use to connect and receive messages.

source_pipeline_port

(optional, integer) Broker port that the bot will use to connect and receive messages. Can be empty for Unix socket.

source_pipeline_password

(optional, string) Broker password that the bot will use to connect and receive messages. Can be null for unprotected broker.

source_pipeline_db

(required, integer) broker database that the bot will use to connect and receive messages (requirement from redis broker).

destination_pipeline_host

(optional, string) broker IP, FQDN or Unix socket that the bot will use to connect and send messages.

destination_pipeline_port

(optional, integer) broker port that the bot will use to connect and send messages. Can be empty for Unix socket.

destination_pipeline_password

(optional, string) broker password that the bot will use to connect and send messages. Can be null for unprotected broker.

destination_pipeline_db

(required, integer) broker database that the bot will use to connect and send messages (requirement from redis broker).

http_proxy

(optional, string) Proxy to use for HTTP.

https_proxy

(optional, string) Proxy to use for HTTPS.

http_user_agent

(optional, string) User-Agent to be used for HTTP requests.

http_verify_cert

(optional, boolean) Verify the TLS certificate of the server. Defaults to true.

Individual Bot Configuration

Info

For the individual bot configuration please see the Bots document in the User Guide.

Run Mode

This sections provides more detailed explanation of the two run modes of the bots.

Continuous

Most of the cases, bots will need to be configured as continuous run mode (the default) in order to have them always running and processing events. Usually, the types of bots that will require the continuous mode will be Parsers, Experts and Outputs. To do this, set run_mode to continuous in the runtime.yaml for the bot. Check the following example:

blocklistde-apache-parser:
+  name: Blocklist.de Parser
+  group: Parser
+  module: intelmq.bots.parsers.blocklistde.parser
+  description: Blocklist.DE Parser is the bot responsible to parse the report and sanitize the information.
+  enabled: false
+  run_mode: continuous
+  parameters: ...
+

You can now start the bot using the following command:

intelmqctl start blocklistde-apache-parser
+

Bots configured as continuous will never exit except if there is an error and the error handling configuration requires the bot to exit. See the Error Handling section for more details.

Scheduled

In many cases, it is useful to schedule a bot at a specific time (i.e. via cron(1)), for example to collect information from a website every day at midnight. To do this, set run_mode to scheduled in the runtime.yaml for the bot. Check out the following example:

blocklistde-apache-collector:
+  name: Generic URL Fetcher
+  group: Collector
+  module: intelmq.bots.collectors.http.collector_http
+  description: All IP addresses which have been reported within the last 48 hours as having run attacks on the service Apache, Apache-DDOS, RFI-Attacks.
+  enabled: false
+  run_mode: scheduled
+  parameters:
+    feed: Blocklist.de Apache
+    provider: Blocklist.de
+    http_url: https://lists.blocklist.de/lists/apache.txt
+    ssl_client_certificate: null
+

You can schedule the bot with a crontab-entry like this:

0 0 * * * intelmqctl start blocklistde-apache-collector
+

Bots configured as scheduled will exit after the first successful run. Setting enabled to false will cause the bot to not start with intelmqctl start, but only with an explicit start, in this example intelmqctl start blocklistde-apache-collector.

Additional Runtime Parameters

Some of the parameters are deliberately skipped from the User Guide because they are configured via graphical user interface provided by the IntelMQ Manager. These parameters have to do with configuring the pipeline: defining how the data is exchanged between the bots. Using the IntelMQ Manager for this have many benefits as it guarantees that the configuration is correct upon saving.

However as an administrator you should be also familiar with the manual (and somewhat tedious) configuration. For each bot there are two parameters that need to be set:

source_queue

(optional, string) The name of the source queue from which the bot is going to processing data. Each bot has maximum one source queue (collector bots don't have any source queue as they fetch data from elsewhere). Defaults to the bot id appended with the string -queue.

Example: a bot with id example-bot will have a default source queue named example-bot-queue.

destination_queues

(optional, object) Bots can have multiple destination queues. Destination queues can also be grouped into named paths. There are two special path names _default and _on_error. The path _default is used if the path is not is specified by the bot itself (which is the most common case). In case of an error during the processing, the message will be sent to the _on_error path if specified (optional).

Only few of the bots (mostly expert bots with filtering capabilities) can take advantage of arbitrarily named paths. Some expert bots are capable of sending messages to paths, this feature is explained in their documentation, e.g. the Filter expert and the Sieve expert.

Example:

blocklistde-apache-collector:
+  # ...
+  parameters:
+    # ...
+    destination_queues:
+      _default:
+        - <first destination pipeline name>
+        - <second destination pipeline name>
+      _on_error:
+        - <optional first destination pipeline name in case of errors>
+        - <optional second destination pipeline name in case of errors>
+      other-path:
+        - <second destination pipeline name>
+        - <third destination pipeline name>
+

harmonization.conf

This configuration is used to specify the fields for all message types. The harmonization library will load this configuration to check, during the message processing, if the values are compliant to the configured harmonization format. Usually, this configuration doesn't need any change. It is mostly maintained by the IntelMQ maintainers.

Template:

{
+  "<message type>": {
+    "<field 1>": {
+      "description": "<field 1 description>",
+      "type": "<field value type>"
+    },
+    "<field 2>": {
+      "description": "<field 2 description>",
+      "type": "<field value type>"
+    }
+  }
+}
+

Example:

{
+  "event": {
+    "destination.asn": {
+      "description": "The autonomous system number from which originated the connection.",
+      "type": "Integer"
+    },
+    "destination.geolocation.cc": {
+      "description": "Country-Code according to ISO3166-1 alpha-2 for the destination IP.",
+      "regex": "^[a-zA-Z0-9]{2}$",
+      "type": "String"
+    }
+  }
+}
+
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Using Elasticsearch as a database for IntelMQ

If you wish to run IntelMQ with Elasticsearch or full ELK stack (Elasticsearch, Logstash, Kibana) it is entirely possible. This guide assumes the reader is familiar with basic configuration of ELK and does not aim to cover using ELK in general. It is based on the version 6.8.0 (ELK is a fast moving train therefore things might change). Assuming you have IntelMQ (and Redis) installation in place, lets dive in.

Configuration without Logstash

This case involves two steps:

  1. Configure IntelMQ to output data directly into Elasticsearch.

  2. Configure Elasticsearch for ingesting the inserted data.

Bug

This section of the documentation is currently incomplete and will be updated later.

Configuration with Logstash

This case involves three steps:

  1. Configuring IntelMQ to output data to Redis.

  2. Configure Logstash to collect data from Redis and insert them into Elasticsearch.

  3. Configure Elasticsearch for ingesting the inserted data.

Each step is described in detail in the following sections.

Configuring IntelMQ

In order to pass IntelMQ events to Logstash we will utilize already installed Redis. Add a new Redis Output Bot to your pipeline. As the minimum fill in the following parameters: bot-id, redis_server_ip (can be hostname) , redis_server_port, redis_password (if required, else set to empty!), redis_queue (name for the queue). It is recommended to use a different redis_db parameter than used by the IntelMQ (specified as source_pipeline_db , destination_pipeline_db and statistics_database).

Example values:

bot-id: redis-output
+redis_server_ip: 10.10.10.10
+redis_server_port: 6379
+redis_db: 4
+redis_queue: logstash-queue
+

Warning

You will not be able to monitor this redis queue via IntelMQ Manager.

Configuring Logstash

Logstash defines pipelines as well. In the pipeline configuration of Logstash you need to specify where it should look for IntelMQ events, what to do with them and where to pass them.

Input

This part describes how to receive data from Redis queue. See the example configuration and comments below:

input {
+  redis {
+    host => "10.10.10.10"
+    port => 6379
+    db => 4
+    data_type => "list"
+    key => "logstash-queue"
+  }
+}
+
  • host - same as redis_server_ip from the Redis Output Bot
  • port - the redis_server_port from the Redis Output Bot
  • db - the redis_db parameter from the Redis Output Bot
  • data_type - set to list
  • key - same as redis_queue from the Redis Output Bot

Tip

You can use environment variables for the Logstash configuration, for example host => "${REDIS_HOST:10.10.10.10}". The value will be taken from the environment variable $REDIS_HOST. If the environment variable is not set then the default value of 10.10.10.10 will be used instead.

Filter (optional)

Before passing the data to the database you can apply certain changes. This is done with filters. See an example:

filter {
+  mutate {
+    lowercase => ["source.geolocation.city", "classification.identifier"]
+    remove_field => ["__type", "@version"]
+  }
+  date {
+    match => ["time.observation", "ISO8601"]
+  }
+}
+

Tip

It is recommended to use the date filter: generally we have two timestamp fields - time.source (provided by the feed source this can be understood as when the event happened; however it is not always present) and time.observation (when IntelMQ collected this event). Logstash also adds another field @timestamp with time of processing by Logstash. While it can be useful for debugging, I recommend to set the @timestamp to the same value as time.observation.

Warning

It is not recommended to apply any modifications to the data (within the mutate key) outside of the IntelMQ. All necessary modifications should be done only by appropriate IntelMQ bots. This example only demonstrates the possibility.

Output

The pipeline also needs output, where we define our database (Elasticsearch). The simplest way of doing so is defining an output like this:

output {
+  elasticsearch {
+    hosts => ["http://10.10.10.11:9200", "http://10.10.10.12:9200"]
+    index => "intelmq-%{+YYYY.MM}"
+  }
+}
+
  • hosts - Elasticsearch host (or more) with the correct port (9200 by default)
  • index - name of the index where to insert data

Tip

Authors experience, hardware equipment and the amount of events collected led to having a separate index for each month. This might not necessarily suit your needs, but it is a suggested option.

Warning

By default the ELK stack uses insecure HTTP. It is possible to setup Security for secure connections and basic user management. This is possible with the Basic (free) licence since versions 6.8.0 and 7.1.0.

Configuring Elasticsearch

Configuring Elasticsearch is entirely up to you and should be consulted with the official documentation. What you will most likely need is something called index template mappings. IntelMQ provides a tool for generating such mappings. See ElasticMapper Tool.

Danger

Default installation of Elasticsearch database allows anyone with cURL and connection capability to have administrative access to the database. Make sure you secure your toys!

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MSSQL

For MSSQL support, the library pymssql>=2.2 is required.

To output data to MSSQL use SQL Output Bot with parameter engine set to mssql.

For more information see SQL Output Bot documentation page.

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Using PostgreSQL as a database for IntelMQ

The EventDB is a database (usually PostgreSQL) that gets filled with with data from IntelMQ using the SQL Output Bot.

intelmq_psql_initdb

IntelMQ comes with the intelmq_psql_initdb command line tool designed to help with creating the EventDB. It creates in the first line:

  • A CREATE TABLE events statement with all valid IntelMQ fields as columns and correct types
  • Several indexes as examples for a good read & search performance

Having an events table as outlined in the SQL file, IntelMQ's SQL Output Bot can write all received events into this database table.

In addition, the script supports some additional features supporting use cases described later in this document:

  • --partition-key - for generating schema aligned with TimescaleDB or partitioned tables,
  • --separate-raws - for generating views and triggers needed to eventdb_raws_table (works also together with adjustments for partitioning).

For a full list of supported parameters, call the script help using -h parameter.

All elements of the generated SQL file can be adapted and extended before running the SQL file against a database, especially the indexes. Please review the generated script before applying.

Be aware that if you create tables using another DB user that is used later by the output bot, you may need to adjust ownership or privileges in the database. If you have problems with database permissions, refer to PostgreSQL documentation <https://www.postgresql.org/docs/current/ddl-priv.html>.

EventDB Utilities

Some scripts related to the EventDB are located in the contrib/eventdb folder in the IntelMQ git repository.

Apply Malware Name Mapping

The apply_mapping_eventdb.py script applies the malware name mapping to the EventDB. Source and destination columns can be given, also a local file. If no local file is present, the mapping can be downloaded on demand. It queries the database for all distinct malware names with the taxonomy "malicious-code" and sets another column to the malware family name.

Apply Domain Suffix

The apply_domain_suffix.py script writes the public domain suffix to the source.domain_suffix / destination.domain_suffix columns, extracted from source.fqdn / destination.fqdn.

Usage

The Python scripts can connect to a PostgreSQL server with an eventdb database and an events table. The command line arguments interface for both scripts are the same. See --help for more information:

apply_mapping_eventdb.py -h
+apply_domain_suffix.py -h
+

PostgreSQL trigger

PostgreSQL trigger is a trigger keeping track of the oldest inserted/updated "time.source" data. This can be useful to (re-)generate statistics or aggregation data.

The SQL script can be executed in the database directly.

EventDB Statistics

The EventDB provides a great base for statistical analysis of the data.

The eventdb-stats repository contains a Python script that generates an HTML file and includes the Plotly JavaScript Open Source Graphing Library. By modifying the configuration file it is possible to configure various queries that are then displayed using graphs:

EventDB Statistics Example

Using EventDB with Timescale DB

Timescale DB is a PostgreSQL extension to add time-series support, which is quite handy as you don't have to learn other syntaxes as you already know. You can use the SQL Queries as before, the extension will handle the rest. To see all limitations, please check the Timescale DB Documentation.

What is time-series?

Time-series has been invented as traditional database design like relational or nosql are not made for time-based data. A big benefit of time-series instead of other database designs over a time-based search pattern is the performance. As IntelMQ uses data based upon time, this design is awesome & will give you a performance boost.

How to choose the time column?

To utilize the time-series, choose a column containing the right time. This is then used by you for manual queries and graphs, and also by the database itself for organizing the data.

An Event has two fields that can be used for this: time.source or time.observation. Depending on your needs (tracking when the event occurred or when it was detected, if different), choose one of them.

You can use the :ref:intelmq_psql_initdb tool to generate SQL schema valid for TimescaleDB by passing the partitioning key:

intelmq_psql_initdb --partition-key "time.source"
+

How to setup

Thanks to TimescaleDB its very easy to setup.

  1. Choose your preferred Timescale DB environment & follow the installation instructions. 2. Now lets create a hypertable, which is the timescale DB time-series structure. SELECT create_hypertable('', 'time.source');. 3. Now our hypertable is setup & timescaleDB takes care of the rest. You can perform queries as usual, for further information please check Timescale DB Documentation.

How to upgrade from my existing database?

To update your existing database to use this awesome time-series feature, just follow the How to setup instruction. You can perform the hypertable command even on already existing databases. BUT there are some limitations from timescaleDB.

Separating raw values in PostgreSQL using view and trigger

In order to reduce the row size in the events table, the raw column's data can be separated from the other columns. While the raw-data is about 30-50% of the data row's size, it is not used in most database queries, as it serves only a backup functionality. Other possibilities to reduce or getting rid of this field are described in the FAQ, section faq-remove-raw-data.

The steps described here are best performed before the events table is filled with data, but can as well be done with existing data.

The approach requires four steps:

  1. An existing events table, see the first section of this document.
  2. Deleting or renaming the raw column of the events table.
  3. Creating a table raws which holds only the raw field of the events and linking both tables using the event_id.
  4. Creating the view v_events which joins the tables events and raws.
  5. Creating the function process_v_events_insert and INSERT trigger tr_events.

The last steps brings us several advantages:

  • All INSERT statements can contain all data, including the raw field.
  • No code changes are needed in the IntelMQ output bot or your own scripts. A migration is seamless.
  • PostgreSQL itself ensures that the data of both tables is consistent and linked correctly.

The complete SQL script can be generated using the intelmq_psql_initdb. It does not cover step 2 to avoid accidental data loss - you need to do this step manually.

Other docs

You have two basic choices to run PostgreSQL:

  1. on the same machine as intelmq, then you could use Unix sockets if available on your platform
  2. on a different machine. In which case you would need to use a TCP connection and make sure you give the right connection parameters to each psql or client call.

Make sure to consult your PostgreSQL documentation about how to allow network connections and authentication in case 2.

PostgreSQL Version

Any supported version of PostgreSQL should work (v>=9.2 as of Oct 2016) [1].

If you use PostgreSQL server v >= 9.4, it gives you the possibility to use the time-zone formatting string "OF" for date-times and the GiST index for the CIDR type. This may be useful depending on how you plan to use the events that this bot writes into the database.

How to install

Use intelmq_psql_initdb to create initial SQL statements from harmonization.conf. The script will create the required table layout and save it as /tmp/initdb.sql

You need a PostgreSQL database-user to own the result database. The recommendation is to use the name intelmq . There may already be such a user for the PostgreSQL database-cluster to be used by other bots. (For example from setting up the expert/certbund_contact bot.)

Therefore if still necessary: create the database-user as postgresql superuser, which usually is done via the system user postgres:

createuser --no-superuser --no-createrole --no-createdb --encrypted --pwprompt intelmq
+

Create the new database:

createdb --encoding='utf-8' --owner=intelmq intelmq-events
+

(The encoding parameter should ensure the right encoding on platform where this is not the default.)

Now initialize it as database-user intelmq (in this example a network connection to localhost is used, so you would get to test if the user intelmq can authenticate):

psql -h localhost intelmq-events intelmq </tmp/initdb.sql
+

PostgreSQL and null characters

While null characters (0, not SQL "NULL") in TEXT and JSON/JSONB fields are valid, data containing null characters can cause troubles in some combinations of clients, servers and each settings. To prevent unhandled errors and data which can't be inserted into the database, all null characters are escaped (u0000) before insertion.

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Sending IntelMQ events to Splunk

  1. Go to Splunk and configure in order to be able to receive logs (intelmq events) to a TCP port
  2. Use TCP output bot and configure accordingly to the Splunk configuration that you applied.
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SQLite

Similarly to PostgreSQL, you can use intelmq_psql_initdb to create initial SQL statements from harmonization.conf. The script will create the required table layout and save it as /tmp/initdb.sql.

Create the new database (you can ignore all errors since SQLite doesn't know all SQL features generated for PostgreSQL):

sqlite3 your-db.db
+sqlite> .read /tmp/initdb.sql
+

Then, set the database parameter to the your-db.db file path.

To output data to SQLite use SQL Output Bot with parameter engine set to sqlite. For more information see SQL Output Bot documentation page.

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Frequently asked questions

How can I improve the speed?

In most cases the bottlenecks are look-up experts. In these cases you can easily use the integrated load balancing features.

Multithreading

When using the AMQP broker, you can make use of Multi-threading. See the multithreading section.

"Classic" load-balancing (Multiprocessing)

Before Multithreading was available in IntelMQ, and in case you use Redis as broker, the only way to do load balancing involves more work. Create multiple instances of the same bot and connect them all to the same source and destination bots. Then set the parameter load_balance to true for the bot which sends the messages to the duplicated bot. Then, the bot sends messages to only one of the destination queues and not to all of them.

True Multiprocessing is not available in IntelMQ. See also this discussion on a possible enhanced load balancing <186>.

Other options

For any bottleneck based on (online) lookups, optimize the lookup itself and if possible use local databases.

It is also possible to use multiple servers to spread the workload. To get the messages from one system to the other you can either directly connect to the other's pipeline or use a fast exchange mechanism such as the TCP Collector/Output (make sure to secure the network by other means).

Removing raw data for higher performance and less space usage

If you do not need the raw data, you can safely remove it. For events (after parsers), it keeps the original data, eg. a line of a CSV file. In reports it keeps the actual data to be parsed, so don't delete the raw field in Reports - between collectors and parsers.

The raw data consumes about 50% - 30% of the messages' size. The size of course depends on how many additional data you add to it and how much data the report includes. Dropping it, will improve the speed as less data needs to be transferred and processed at each step.

In a bot

You can do this for example by using the Field Reducer Expert. The configuration could be:

  • type: blacklist
  • keys: raw

Other solutions are the Modify bot and the Sieve bot. The last one is a good choice if you already use it and you only need to add the command:

remove raw
+

In the database

In case you store data in the database and you want to keep its size small, you can (periodically) delete the raw data there.

To remove the raw data for a events table of a PostgreSQL database, you can use something like:

UPDATE events SET raw = NULL WHERE "time.source" < '2018-07-01';
+

If the database is big, make sure only update small parts of the database by using an appropriate WHERE clause. If you do not see any negative performance impact, you can increase the size of the chunks, otherwise the events in the output bot may queue up. The id column can also be used instead of the source's time.

Another way of reducing the raw-data from the database is described in the EventDB documentation: eventdb_raws_table.

How to Uninstall

If you installed intelmq with native packages: Use the package management tool to remove the package intelmq. These tools do not remove configuration by default.

If you installed manually via pip (note that this also deletes all configuration and possibly data):

pip3 uninstall intelmq
+rm -r /opt/intelmq
+
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Hardware Requirements

Do you ask yourself how much RAM do you need to give your new IntelMQ virtual machine?

The honest answer is simple and pointless: It depends ;)

IntelMQ and the messaging queue (broker)

IntelMQ uses a messaging queue to move the messages between the bots. All bot instances can only process one message at a time, therefore all other messages need to wait in the queue. As not all bots are equally fast, the messages will naturally "queue up" before the slower ones. Further, parsers produce many events with just one message (the report) as input.

The following estimations assume Redis as messaging broker which is the default for IntelMQ. When RabbitMQ is used, the required resources will differ, and RabbitMQ can handle system overload and therefore a shortage of memory.

As Redis stores all data in memory, the data which is processed at any point in time must fit there, including overheads. Please note that IntelMQ does neither store nor cache any input data. These estimates therefore only relate to the processing step, not the storage.

For a minimal system, these requirements suffice:

  • 4 GB of RAM
  • 2 CPUs
  • 10 GB disk size

Depending on your data input, you will need the twentiethfold of the input data size as memory for processing.

When using Redis persistence, you will additionally need twice as much memory for Redis.

Disk space

Disk space is only relevant if you save your data to a file, which is not recommended for production setups, and only useful for testing and evaluation.

Do not forget to rotate your logs or use syslog, especially if you use the logging level "DEBUG". logrotate is in use by default for all installation with deb/rpm packages. When other means of installation are used (pip, manual), configure log rotation manually. See logging configuration.

Background on memory

For experimentation, we used multiple Shadowserver Poodle reports for demonstration purpose, totaling in 120 MB of data. All numbers are estimates and are rounded. In memory, the report data requires 160 MB. After parsing, the memory usage increases to 850 MB in total, as every data line is stored as JSON, with additional information plus the original data encoded in Base 64. The further processing steps depend on the configuration, but you can estimate that caches (for lookups and deduplication) and other added information cause an additional size increase of about 2x. Once a dataset finished processing in IntelMQ, it is no longer stored in memory. Therefore, the memory is only needed to catch high load.

The above numbers result in a factor of 14 for input data size vs. memory required by Redis. Assuming some overhead and memory for the bots' processes, a factor of 20 seems sensible.

To reduce the amount of required memory and disk size, you can optionally remove the raw data field, see this section in the FAQ.

Additional components

If some of the optional components are in use, they can add additional hardware requirements.

Those components do not add relevant requirements:

  • IntelMQ API: It is just an API for intelmqctl.
  • IntelMQ Manager: Only contains static files served by the webserver.
  • IntelMQ Webinput CSV: Just a webinterface to insert data. Requires the amount of processed data to fit in memory, see above.
  • Stats Portal: The aggregation step and Graphana require some resources, but no exact numbers are known.
  • Malware Name Mapping
  • Docker: The docker layer adds only minimal hardware requirements.

Database

When storing data in databases (such as MongoDB, PostgreSQL, ElasticSearch), it is recommended to do this on separate machines for operational reasons. Using a different machine results in a separation of stream processing to data storage and allows for a specialized system optimization for both use-cases.

IntelMQ cb mailgen

While the Fody backend and frontend do not have significant requirements, the RIPE import tool of the certbund-contact requires about 8 GB of memory as of March 2021.

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Installation from DockerHub

This guide provides instruction on how to install IntelMQ and it's components using Docker.

Warning

Docker installation is currently in Beta state and things might break. Consider this if you plan to use IntelMQ as a production level system.

Warning

Currently you can't manage your botnet via intelmqctl command line tool. You need to use IntelMQ-Manager currently!

The latest IntelMQ image is hosted on Docker Hub and the image build instructions are in our intelmq-docker repository.

Follow Docker Install and Docker-Compose Install instructions.

Before you start using docker-compose or any docker related tools, make sure docker is running:

# To start the docker daemon
+systemctl start docker.service
+# To enable the docker daemon for the future
+systemctl enable docker.service
+

Docker with docker-compose

Now we can download IntelMQ and start the containers. Navigate to your preferred installation directory and run the following commands:

git clone https://github.com/certat/intelmq-docker.git --recursive
+cd intelmq-docker
+sudo docker-compose pull
+sudo docker-compose up
+

Your installation should be successful now. You're now able to visit http://127.0.0.1:1337/ to access the intelmq-manager. You have to login with the username intelmq and the password intelmq, if you want to change the username or password, you can do this by adding the environment variables INTELMQ_API_USER for the username and INTELMQ_API_PASS for the password.

Note

If you get an Permission denied error, you should run chown -R $USER:$USER example_config

Docker without docker-compose

If not already installed, please install Docker.

Navigate to your preferred installation directory and run git clone https://github.com/certat/intelmq-docker.git --recursive.

You need to prepare some volumes & configs. Edit the left-side after -v, to change paths.

Change redis_host to a running redis-instance. Docker will resolve it automatically. All containers are connected using Docker Networks.

In order to work with your current infrastructure, you need to specify some environment variables

sudo docker pull redis:latest
+
+sudo docker pull certat/intelmq-full:latest
+
+sudo docker pull certat/intelmq-nginx:latest
+
+sudo docker network create intelmq-internal
+
+sudo docker run -v ~/intelmq/example_config/redis/redis.conf:/redis.conf \
+                --network intelmq-internal \
+                --name redis \
+                redis:latest
+
+sudo docker run --network intelmq-internal \
+                --name nginx \
+                certat/intelmq-nginx:latest
+
+sudo docker run -e INTELMQ_IS_DOCKER="true" \
+                -e INTELMQ_SOURCE_PIPELINE_BROKER: "redis" \
+                -e INTELMQ_PIPELINE_BROKER: "redis" \
+                -e INTELMQ_DESTIONATION_PIPELINE_BROKER: "redis" \
+                -e INTELMQ_PIPELINE_HOST: redis \
+                -e INTELMQ_SOURCE_PIPELINE_HOST: redis \
+                -e INTELMQ_DESTINATION_PIPELINE_HOST: redis \
+                -e INTELMQ_REDIS_CACHE_HOST: redis \
+                -v $(pwd)/example_config/intelmq/etc/:/etc/intelmq/etc/ \
+                -v $(pwd)/example_config/intelmq-api/config.json:/etc/intelmq/api-config.json \
+                -v $(pwd)/intelmq_logs:/etc/intelmq/var/log \
+                -v $(pwd)/intelmq_output:/etc/intelmq/var/lib/bots \
+                -v ~/intelmq/lib:/etc/intelmq/var/lib \
+                --network intelmq-internal \
+                --name intelmq \
+                certat/intelmq-full:latest
+

If you want to use another username and password for the intelmq-manager / api login, additionally add two new environment variables.

-e INTELMQ_API_USER: "your username"
+-e INTELMQ_API_PASS: "your password"
+
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Installation as Linux package

This guide provides instructions on how to install IntelMQ and it's components from Linux distribution's package repository.

Note

Some bots may have additional dependencies which are mentioned in their own documentation.

Supported OS

Native packages are currently provided for the following Linux distributions:

  • Debian 11 (bullseye)
  • Debian 12 (bookworm)
  • openSUSE Tumbleweed
  • Ubuntu 20.04 (focal fossa)
  • Ubuntu 22.04 (jammy jellyfish)

Debian 11 and 12

Add the repository to the package manager and install IntelMQ (packages intelmq-api and intelmq-manager are optional):

echo "deb http://download.opensuse.org/repositories/home:/sebix:/intelmq/Debian_$(lsb_release -rs)/ /" | sudo tee /etc/apt/sources.list.d/intelmq.list
+curl -fsSL "https://download.opensuse.org/repositories/home:sebix:intelmq/Debian_$(lsb_release -rs)/Release.key" | gpg --dearmor | sudo tee /etc/apt/trusted.gpg.d/intelmq.gpg > /dev/null
+sudo apt update
+sudo apt install intelmq intelmq-api intelmq-manager
+

openSUSE Tumbleweed

Add the repository to the package manager and install IntelMQ (packages intelmq-api and intelmq-manager are optional):

zypper addrepo https://download.opensuse.org/repositories/home:sebix:intelmq/openSUSE_Tumbleweed/home:sebix:intelmq.repo
+zypper refresh
+zypper install intelmq intelmq-api intelmq-manager
+

Ubuntu 20.04 and 22.04

For Ubuntu you must enable the Universe repository which provides community-maintained free and open-source software.

Add the repository to the package manager and install IntelMQ (packages intelmq-api and intelmq-manager are optional):

  1. Open the file /etc/apt/sources.list in an editor of your choice. Use sudo or the root user.

  2. Append universe to this line: 

    deb http://[...].archive.ubuntu.com/ubuntu/ focal main universe
+

  3. Next, add the IntelMQ APT Repository for Ubuntu: 

    echo "deb http://download.opensuse.org/repositories/home:/sebix:/intelmq/xUbuntu_$(lsb_release -rs)/ /" | sudo tee /etc/apt/sources.list.d/intelmq.list
+curl -fsSL "https://download.opensuse.org/repositories/home:sebix:intelmq/xUbuntu_$(lsb_release -rs)/Release.key" | gpg --dearmor | sudo tee /etc/apt/trusted.gpg.d/intelmq.gpg > /dev/null
+

  4. Now update the list of available packages and install the IntelMQ packages: 

    sudo apt update
+sudo apt install intelmq intelmq-api intelmq-manager
+

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Installation from PyPI

This guide provides instruction on how to install IntelMQ and it's components using the Python Package Index (PyPI) repository.

Note

Some bots may have additional dependencies which are mentioned in their own documentation.

Installing IntelMQ

Requirements

Ubuntu / Debian

apt install python3-pip python3-dnspython python3-psutil python3-redis python3-requests python3-termstyle python3-tz python3-dateutil redis-server bash-completion jq
+# optional dependencies
+apt install python3-pymongo python3-psycopg2
+

openSUSE:

zypper install python3-dateutil python3-dnspython python3-psutil python3-redis python3-requests python3-python-termstyle redis bash-completion jq
+# optional dependencies
+zypper in python3-psycopg2 python3-pymongo
+

CentOS 8:

dnf install epel-release
+dnf install python3-dateutil python3-dns python3-pip python3-psutil python3-redis python3-requests redis bash-completion jq
+# optional dependencies
+dnf install python3-psycopg2 python3-pymongo
+

CentOS 7 / RHEL 7:

Warning

We no longer support already end-of-life Python 3.6, which is the last Python version officially packaged for CentOS 7. You can either use alternative Python source, or stay on the IntelMQ 3.0.2.

yum install epel-release
+yum install python36 python36-dns python36-requests python3-setuptools redis bash-completion jq
+yum install gcc gcc-c++ python36-devel
+# optional dependencies
+yum install python3-psycopg2
+

Installation

The default installation directory is /opt/intelmq/.

If you prefer to use Linux Standard Base (LSB) paths, set the following environment variable:

export INTELMQ_PATHS_NO_OPT=1
+

If you want to use custom installation directory, set the following environment variable:

export INTELMQ_ROOT_DIR=/my-installation-directory-path
+

Run the following commands to install IntelMQ. The provided tool intelmqsetup will create all the necessary directories and installs a default configuration for new setups. If you are using the LSB paths installation, change the --home-dir parameter to /var/lib/intelmq

sudo --preserve-env=INTELMQ_PATHS_NO_OPT,INTELMQ_ROOT_DIR -i
+pip3 install intelmq
+[[ ! -z "$INTELMQ_PATHS_NO_OPT" ]] && export HOME_DIR=/var/lib/intelmq || export HOME_DIR=${INTELMQ_ROOT_DIR:-/opt/intelmq}
+useradd --system --user-group --home-dir $HOME_DIR --shell /bin/bash intelmq
+intelmqsetup
+

Installation to Python virtual environment

sudo mkdir -m 755 /opt/intelmq
+sudo useradd --system --user-group --home-dir /opt/intelmq --shell /bin/bash intelmq
+sudo chown intelmq:intelmq /opt/intelmq/
+sudo -u intelmq python3 -m venv /opt/intelmq/venv
+sudo -u intelmq /opt/intelmq/venv/bin/pip install intelmq intelmq-api intelmq-manager
+sudo /opt/intelmq/venv/bin/intelmqsetup
+

Installing IntelMQ API (optional)

The intelmq-api packages ships:

  • api configuration file in ${PREFIX}/etc/intelmq/api-config.json
  • positions configuration for the intelmq-manager in {PREFIX}/etc/intelmq/manager/positions.conf
  • virtualhost configuration file for Apache 2 in ${PREFIX}/etc/intelmq/api-apache.conf
  • sudoers configuration file in ${PREFIX}/etc/intelmq/api-sudoers.conf

The value of ${PREFIX} depends on your environment and is something like /usr/local/lib/pythonX.Y/dist-packages/ (where X.Y is your Python version).

The virtualhost configuration file needs to be placed in the correct directory for your Apache 2 installation.

  • On Debian or Ubuntu, move the file to /etc/apache2/conf-available.d/ directory and then execute a2enconf api-apache.
  • On CentOS, RHEL or Fedora, move the file to /etc/httpd/conf.d/ directory.
  • On openSUSE, move the file to /etc/apache2/conf.d/ directory.

Don't forget to reload your webserver afterwards.

The api configuration file and the positions configuration file need to be placed in one of the following directories (based on your IntelMQ installation directory):

  • /etc/intelmq/
  • /opt/intelmq/etc/
  • [my-installation-directory-path]/etc/

The sudoers configuration file should be placed in the /etc/sudoers.d/ directory and adapt the webserver username in this file. Set the file permissions to 0o440.

Afterwards continue with the section Permissions below.

IntelMQ 2.3.1 comes with a tool intelmqsetup which performs these set-up steps automatically. Please note that the tool is very new and may not detect all situations correctly. Please report us any bugs you are observing. The tools is idempotent, you can execute it multiple times.

Installing IntelMQ Manager (optional)

To use the IntelMQ Manager web interface, it is required to have a working IntelMQ and IntelMQ API installation.

For installation via pip, the situation is more complex. The intelmq-manager package does not contain ready-to-use files, they need to be built locally. First, lets install the Manager itself:

pip3 install intelmq-manager
+

If your system uses wheel-packages, not the source distribution, you can use the intelmqsetup tool. intelmqsetup which performs these set-up steps automatically but it may not detect all situations correctly. If it finds intelmq-manager installed, calls its build routine is called. The files are placed in /usr/share/intelmq_manager/html, where the default Apache configuration expect it.

If your system used the dist-package or if you are using a local source, the tool may not do all required steps. To call the build routine manually, use intelmq-manager-build --output-dir your/preferred/output/directory/.

intelmq-manager ships with a default configuration for the Apache webserver (manager-apache.conf):

Alias /intelmq-manager /usr/share/intelmq_manager/html/
+
+<Directory /usr/share/intelmq_manager/html>
+    <IfModule mod_headers.c>
+    Header set Content-Security-Policy "script-src 'self'"
+    Header set X-Content-Security-Policy "script-src 'self'"
+    </IfModule>
+</Directory>
+

This file needs to be placed in the correct place for your Apache 2 installation.

  • On Debian and Ubuntu, the file needs to be placed at /etc/apache2/conf-available.d/manager-apache.conf and then execute a2enconf manager-apache.
  • On CentOS, RHEL and Fedora, the file needs to be placed at /etc/httpd/conf.d/ and reload the webserver.
  • On openSUSE, the file needs to be placed at /etc/apache2/conf.d/ and reload the webserver.
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CIFv3 integrations in IntelMQ

CIF creates an accessible indicator store. A REST API is exposed to interact with the store and quickly process/share indicators. CIFv3 can correlate indicators via the UUID attribute.

CIF3 API Output

Can be used to submit indicators to a CIFv3 instance by using the CIFv3 API.

Look at the CIFv3 API Output Bot for more information.

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MISP integrations in IntelMQ

While MISP and IntelMQ seem to solve similar problems in the first hindsight, their intentions and strengths differ significantly.

In a nutshell, MISP stores manually curated indicators (called attributes) grouped in events. An event can have an arbitrary number of attributes. MISP correlates these indicators with each other and can synchronize the data between multiple MISP instances.

On the other side, IntelMQ in it's essence (not considering the EventDB <eventdb>) has no state or database, but is stream-oriented. IntelMQ acts as a toolbox which can be configured as needed to automate processes of mass data with little or no human interaction At the end of the processing the data may land in some database or be sent to other systems.

Both systems do not intend to replace each other or do compete. They integrate seamless and combine each other enabling more use-cases and

MISP API Collector

The MISP API Collector fetches data from MISP via the MISP API .

Look at the Bots documentation page for more information.

MISP Expert

The MISP Expert searches MISP by using the MISP API for attributes/events matching the source.ip of the event. The MISP Attribute UUID and MISP Event ID of the newest attribute are added to the event.

Look at the Bots documentation page for more information.

MISP Feed Output

This bot creates a complete MISP feed ready to be configured in MISP as incoming data source.

Look at the Bots documentation page for more information.

MISP API Output

Can be used to directly create MISP events in a MISP instance by using the MISP API.

Look at the Bots documentation page for more information.

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IntelMQ - n6 Integration

n6 is an Open Source Tool with very similar aims as IntelMQ: processing and distributing IoC data. The use-cases, architecture and features differ and both tools have non-overlapping strengths. n6 is maintained and developed by CERT.pl.

Information about n6 can be found here:

n6 schema

n6 data flow

Data format

The internal data representation differs between IntelMQ and n6, so any data exchange between the systems requires a format conversion. For example, in n6 one message can contain multiple IP addresses, but IntelMQ is intentionally restricted to one IP address per message. Therefore, one n6 event results in one or more IntelMQ events. Because of this, and some other naming differences and ambiguities, the format conversion is not bidirectional.

Data exchange interface

n6 offers a STOMP interface via the RabbitMQ broker, which can be used for both sending and receiving data. IntelMQ offers both a STOMP collector bot for receiving data from n6, as well as a STOMP output bot for sending data to n6 instances.

  • Stomp Collector Bot
  • N6 Parser Bot
  • Stomp Output Bot

Data conversion

IntelMQ can parse n6 data using the n6 parser and n6 can parse IntelMQ data using the Intelmq n6 parser.

  • N6 Parser Bot

Complete example

Data flow n6 to IntelMQ

dataflow from n6 to IntelMQ

Data flow IntelMQ to n6

dataflow from IntelMQ to n6

CERT.pl Data feed

CERT.pl offers data feed available to their partners through the STOMP interface. Our feeds documentation contains details how it can be enabled in IntelMQ: CERT.pl n6 STOMP stream

Webinput CSV

The IntelMQ Webinput CSV software can also be used together with n6. The documentation on this component can be found in the software's repository: https://github.com/certat/intelmq-webinput-csv/blob/master/docs/webinput-n6.md

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Intro

This guide provides instructions on how to install, configure and manage IntelMQ and it's components.

IntelMQ uses a message broker such as Redis. This is required for IntelMQ to run.

IntelMQ doesn't handle long term storage of processed Events beyond writing to a file. However it provides connectors (output bots) for writing events to various database systems and log collectors. It is recommended to configure such system to preserve processed events.

Base Requirements

The following instructions assume the following requirements. Python versions >= 3.7 are supported.

Supported and recommended operating systems are:

  • Debian
  • openSUSE Tumbleweed/Leap
  • Ubuntu
  • For the Docker-installation: Docker Engine: 18.x and higher

Other distributions which are (most probably) supported include AlmaLinux, CentOS, Fedora, FreeBSD 12, RHEL and RockyLinux.

A short guide on hardware requirements can be found on the page Hardware Requirements.

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Managing IntelMQ API

Running

For development purposes and testing you can run directly using hug:

hug -m intelmq_api.serve
+
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Managing IntelMQ

Required services

You need to enable and start Redis if not already done. Using systemd it can be done with:

systemctl enable redis.service
+systemctl start redis.service
+

Introduction

intelmqctl is the main tool to handle a intelmq installation. It handles the bots themselves and has some tools to handle the installation.

Should you get lost any time, just use the --help after any argument for further explanation.

> intelmqctl run file-output --help
+

Manage the botnet

In IntelMQ, the botnet is the set of all currently configured and enabled bots. All configured bots have their configuration in runtime.yaml. By default, all bots are enabled.

If no bot id is given, the command applies to all bots / the botnet. All commands except the start action are applied to all bots. But only enabled bots are started.

In the examples below, a very minimal botnet is used.

start

The start action applies to all bots which are enabled.

> intelmqctl start
+Starting abusech-domain-parser...
+abusech-domain-parser is running.
+Starting abusech-feodo-domains-collector...
+abusech-feodo-domains-collector is running.
+Starting deduplicator-expert...
+deduplicator-expert is running.
+file-output is disabled.
+Botnet is running.
+

As we can file-output is disabled and thus has not been started. You can always explicitly start disabled bots.

stop

The stop action applies to all bots. Assume that all bots have been running:

> intelmqctl stop
+Stopping Botnet...
+Stopping abusech-domain-parser...
+abusech-domain-parser is stopped.
+Stopping abusech-feodo-domains-collector...
+abusech-feodo-domains-collector is stopped.
+Stopping deduplicator-expert...
+deduplicator-expert is stopped.
+Stopping file-output...
+file-output is stopped.
+Botnet is stopped.
+

status

With this command we can see the status of all configured bots. Here, the botnet was started beforehand:

> intelmqctl status
+abusech-domain-parser is running.
+abusech-feodo-domains-collector is running.
+deduplicator-expert is running.
+file-output is disabled.
+

And if the disabled bot has also been started:

> intelmqctl status
+abusech-domain-parser is running.
+abusech-feodo-domains-collector is running.
+deduplicator-expert is running.
+file-output is running.
+

If the botnet is stopped, the output looks like this:

> intelmqctl status
+abusech-domain-parser is stopped.
+abusech-feodo-domains-collector is stopped.
+deduplicator-expert is stopped.
+file-output is disabled.
+

restart

The same as start and stop consecutively.

reload

The same as reload of every bot.

enable / disable

The sub commands enable and disable set the corresponding flags in runtime.yaml.

> intelmqctl status
+file-output is stopped.
+malware-domain-list-collector is stopped.
+malware-domain-list-parser is stopped.
+> intelmqctl disable file-output
+> intelmqctl status
+file-output is disabled.
+malware-domain-list-collector is stopped.
+malware-domain-list-parser is stopped.
+> intelmqctl enable file-output
+> intelmqctl status
+file-output is stopped.
+malware-domain-list-collector is stopped.
+malware-domain-list-parser is stopped.
+

Manage individual bots

As all init systems, intelmqctl has the methods start, stop, restart, reload and status.

start

This will start the bot with the ID file-output. A file with it's PID will be created in /opt/intelmq/var/run/[bot-id].pid.

> intelmqctl start file-output
+Starting file-output...
+file-output is running.
+

If the bot is already running, it won't be started again:

> intelmqctl start file-output
+file-output is running.
+

stop

If the PID file does exist, a SIGINT will be sent to the process. After 0.25s we check if the process is running. If not, the PID file will be removed.

> intelmqctl stop file-output
+Stopping file-output...
+file-output is stopped.
+

If there's no running bot, there's nothing to do.

> intelmqctl stop file-output
+file-output was NOT RUNNING.
+

If the bot did not stop in 0.25s, intelmqctl will say it's still running:

> intelmqctl stop file-output
+file-output is still running
+

status

Checks for the PID file and if the process with the given PID is alive. If the PID file exists, but the process does not exist, it will be removed.

> intelmqctl status file-output
+file-output is stopped.
+> intelmqctl start file-output
+Starting file-output...
+file-output is running.
+> intelmqctl status file-output
+file-output is running.
+

restart

The same as stop and start consecutively.

> intelmqctl restart file-output
+Stopping file-output...
+file-output is stopped.
+Starting file-output...
+file-output is running.
+

reload

Sends a SIGHUP to the bot, which will then reload the configuration.

> intelmqctl reload file-output
+Reloading file-output ...
+file-output is running.
+

If the bot is not running, we can't reload it:

> intelmqctl reload file-output
+file-output was NOT RUNNING.
+

run

This command is used for debugging purposes.

If launched with no arguments, the bot will call its init method and start processing messages as usual -- but you see everything happens.

> intelmqctl run file-output
+file-output: RestAPIOutputBot initialized with id file-output and version 3.5.2 as process 12345.
+file-output: Bot is starting.
+file-output: Loading source pipeline and queue 'file-output-queue'.
+file-output: Connected to source queue.
+file-output: No destination queues to load.
+file-output: Bot initialization completed.
+file-output: Waiting for incoming message.
+

Note that if another instance of the bot is running, only warning will be displayed.

> intelmqctl run file-output
+Main instance of the bot is running in the background. You may want to launch: intelmqctl stop file-output
+

You can set the log level with the -l flag, e.g. -l DEBUG. For the 'console' subcommand, 'DEBUG' is the default.

console

This command is used for debugging purposes.

If launched with console argument, you get a pdb live console; or ipdb or pudb consoles if they were previously installed (I.E. pip3 install ipdb --user).

> intelmqctl run file-output console
+*** Using console ipdb. Please use 'self' to access to the bot instance properties. ***
+ipdb> self. ...
+

You may specify the desired console in the next argument.

> intelmqctl run file-output console pudb
+

message

Operate directly with the input / output pipelines.

If get is the parameter, you see the message that waits in the input (source or internal) queue. If the argument is pop, the message gets popped as well.

> intelmqctl run file-output message get
+file-output: Waiting for a message to get...
+{
+    "classification.type": "c&c",
+    "feed.url": "https://example.com",
+    "raw": "1233",
+    "source.ip": "1.2.3.4",
+    "time.observation": "2017-05-17T22:00:33+00:00",
+    "time.source": "2017-05-17T22:00:32+00:00"
+}
+

To send directly to the bot's output queue, just as it was sent by self.send_message() in bot's process() method, use the send argument. In our case of file-output, it has no destination queue so that nothing happens.

> intelmqctl run file-output message send '{"time.observation": "2017-05-17T22:00:33+00:00", "time.source": "2017-05-17T22:00:32+00:00"}'
+file-output: Bot has no destination queues.
+

Note, if you would like to know possible parameters of the message, put a wrong one -- you will be prompted if you want to list all the current bot harmonization.

process

With no other arguments, bot's process() method will be run one time.

> intelmqctl run file-output process
+file-output: Bot is starting.
+file-output: Bot initialization completed.
+file-output: Processing...
+file-output: Waiting for incoming message.
+file-output: Received message {'raw': '1234'}.
+

If run with --dryrun|-d flag, the message gets never really popped out from the source or internal pipeline, nor sent to the output pipeline. Plus, you receive a note about the exact moment the message would get sent, or acknowledged. If the message would be sent to a non-default path, the name of this path is printed on the console.

> intelmqctl run file-output process -d
+file-output:  * Dryrun only, no message will be really sent through.
+...
+file-output: DRYRUN: Message would be acknowledged now!
+

You may trick the bot to process a JSON instead of the Message in its pipeline with --msg|-m flag.

> intelmqctl run file-output process -m '{"source.ip":"1.2.3.4"}'
+file-output:  * Message from cli will be used when processing.
+...
+

If you wish to display the processed message as well, you the --show-sent|-s flag. Then, if sent through (either with --dryrun or without), the message gets displayed as well.

disable

Sets the enabled flag in the runtime configuration of the bot to false. By default, all bots are enabled.

Example output:

> intelmqctl status file-output
+file-output is stopped.
+> intelmqctl disable file-output
+> intelmqctl status file-output
+file-output is disabled.
+

enable

Sets the enabled flag in the runtime configuration of the bot to true.

Example output:

> intelmqctl status file-output
+file-output is disabled.
+> intelmqctl enable file-output
+> intelmqctl status file-output
+file-output is stopped.
+

List bots

intelmqctl list bots does list all configured bots and their description.

List queues

intelmqctl list queues shows all queues which are currently in use according to the configuration and how much events are in it:

> intelmqctl list queues
+abusech-domain-parser-queue - 0
+abusech-domain-parser-queue-internal - 0
+deduplicator-expert-queue - 0
+deduplicator-expert-queue-internal - 0
+file-output-queue - 234
+file-output-queue-internal - 0
+

Use the -q or --quiet flag to only show non-empty queues:

> intelmqctl list queues -q
+file-output-queue - 234
+

The --sum or --count flag will show the sum of events on all queues:

> intelmqctl list queues --sum
+42
+

Logging

intelmqctl can show the last log lines for a bot, filtered by the log level.

Logs are stored in /opt/intelmq/var/log/ or /var/log/intelmq/ directory. In case of failures, messages are dumped to the same directory with the file extension .dump.

See the help page for more information.

Check

This command will do various sanity checks on the installation and especially the configuration.

Orphaned Queues

The intelmqctl check tool can search for orphaned queues. "Orphaned queues" are queues that have been used in the past and are no longer in use. For example you had a bot which you removed or renamed afterwards, but there were still messages in it's source queue. The source queue won't be renamed automatically and is now disconnected. As this queue is no longer configured, it won't show up in the list of IntelMQ's queues too. In case you are using redis as message broker, you can use the redis-cli tool to examine or remove these queues:

redis-cli -n 2
+keys * # lists all existing non-empty queues
+llen [queue-name] # shows the length of the queue [queue-name]
+lindex [queue-name] [index] # show the [index]'s message of the queue [queue-name]
+del [queue-name] # remove the queue [queue-name]
+

To ignore certain queues in this check, you can set the parameter intelmqctl_check_orphaned_queues_ignore in the defaults configuration file. For example:

"intelmqctl_check_orphaned_queues_ignore": ["Taichung-Parser"]
+

Configuration upgrade

The intelmqctl upgrade-config function upgrade, upgrade the configuration from previous versions to the current one. It keeps track of previously installed versions and the result of all "upgrade functions" in the "state file", locate in the $var_state_path/state.json /opt/intelmq/var/lib/state.json or /var/lib/intelmq/state.json).

This function has been introduced in version 2.0.1.

It makes backups itself for all changed files before every run. Backups are overridden if they already exists. So make sure to always have a backup of your configuration just in case.

Output type

intelmqctl can be used as command line tool, as library and as tool by other programs. If called directly, it will print all output to the console (stderr). If used as python library, the python types themselves are returned. The third option is to use machine-readable JSON as output (used by other managing tools).

Exit code

In case of errors, unsuccessful operations, the exit code is higher than 0. For example, when running intelmqctl start and one enabled bot is not running, the exit code is 1. The same is valid for e.g. intelmqctl status, which can be used for monitoring, and all other operations.

Error Handling

When bots are failing due to bad input data or programming errors, they can dump the problematic message to a file along with a traceback, if configured accordingly. These dumps are saved at in the logging directory as [botid].dump as JSON files. IntelMQ comes with an inspection and reinjection tool, called intelmqdump. It is an interactive tool to show all dumped files and the number of dumps per file. Choose a file by bot-id or listed numeric id. You can then choose to delete single entries from the file with e 1,3,4, show a message in more readable format with s 1 (prints the raw-message, can be long!), recover some messages and put them back in the pipeline for the bot by a or r 0,4,5. Or delete the file with all dumped messages using d.

intelmqdump -h
+usage:
+    intelmqdump [botid]
+    intelmqdump [-h|--help]
+
+intelmqdump can inspect dumped messages, show, delete or reinject them into
+the pipeline. It's an interactive tool, directly start it to get a list of
+available dumps or call it with a known bot id as parameter.
+
+positional arguments:
+  botid       botid to inspect dumps of
+
+optional arguments:
+  -h, --help  show this help message and exit
+  --truncate TRUNCATE, -t TRUNCATE
+                        Truncate raw-data with more characters than given. 0 for no truncating. Default: 1000.
+
+Interactive actions after a file has been selected:
+- r, Recover by IDs
+  > r id{,id} [queue name]
+  > r 3,4,6
+  > r 3,7,90 modify-expert-queue
+  The messages identified by a consecutive numbering will be stored in the
+  original queue or the given one and removed from the file.
+- a, Recover all
+  > a [queue name]
+  > a
+  > a modify-expert-queue
+  All messages in the opened file will be recovered to the stored or given
+  queue and removed from the file.
+- d, Delete entries by IDs
+  > d id{,id}
+  > d 3,5
+  The entries will be deleted from the dump file.
+- d, Delete file
+  > d
+  Delete the opened file as a whole.
+- s, Show by IDs
+  > s id{,id}
+  > s 0,4,5
+  Show the selected IP in a readable format. It's still a raw format from
+  repr, but with newlines for message and traceback.
+- e, Edit by ID
+  > e id
+  > e 0
+  > e 1,2
+  Opens an editor (by calling `sensible-editor`) on the message. The modified message is then saved in the dump.
+- q, Quit
+  > q
+
+$ intelmqdump
+ id: name (bot id)                    content
+  0: alienvault-otx-parser            1 dumps
+  1: cymru-whois-expert               8 dumps
+  2: deduplicator-expert              2 dumps
+  3: dragon-research-group-ssh-parser 2 dumps
+  4: file-output2                     1 dumps
+  5: fraunhofer-dga-parser            1 dumps
+  6: spamhaus-cert-parser             4 dumps
+  7: test-bot                         2 dumps
+Which dump file to process (id or name)? 3
+Processing dragon-research-group-ssh-parser: 2 dumps
+  0: 2015-09-03T13:13:22.159014 InvalidValue: invalid value u'NA' (<type 'unicode'>) for key u'source.asn'
+  1: 2015-09-01T14:40:20.973743 InvalidValue: invalid value u'NA' (<type 'unicode'>) for key u'source.asn'
+(r)ecover by ids, recover (a)ll, delete (e)ntries, (d)elete file, (s)how by ids, (q)uit, edit id (v)? d
+Deleted file /opt/intelmq/var/log/dragon-research-group-ssh-parser.dump
+

Bots and the intelmqdump tool use file locks to prevent writing to already opened files. Bots are trying to lock the file for up to 60 seconds if the dump file is locked already by another process (intelmqdump) and then give up. Intelmqdump does not wait and instead only shows an error message.

By default, the show command truncates the raw field of messages at 1000 characters to change this limit or disable truncating at all (value 0), use the --truncate parameter.

Known issues

The currently implemented process managing using PID files is very erroneous.

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Upgrade instructions

In order to upgrade your IntelMQ installation it is recommended to follow these five steps:

1. Read NEWS.md

Read the NEWS.md file to look for things you need to have a look at.

2. Stop IntelMQ and create a backup

  • Make sure that your IntelMQ system is completely stopped: intelmqctl stop
  • Create a backup of IntelMQ Home directory, which includes all configurations. They are not overwritten, but backups are always nice to have!
sudo cp -R /opt/intelmq /opt/intelmq-backup
+

3. Upgrade IntelMQ

Before upgrading, check that your setup is clean and there are no events in the queues:

intelmqctl check
+intelmqctl list queues -q
+

The upgrade depends on how you installed IntelMQ.

Linux Packages

Use your system's package manager.

PyPi

pip install -U --no-deps intelmq
+sudo intelmqsetup
+

Using --no-deps will not upgrade dependencies, which would probably overwrite the system's libraries. Remove this option to also upgrade dependencies.

Docker

You can check out all current versions on our DockerHub.

docker pull certat/intelmq-full:latest
+
+docker pull certat/intelmq-nginx:latest
+

Alternatively you can use docker-compose:

docker-compose pull
+

You can check the current versions from intelmq & intelmq-manager & intelmq-api via git commit ref.

The Version format for each included item is key=value and they are saparated via ,. I. e. IntelMQ=ab12cd34f,IntelMQ-API=xy65z23.

docker inspect --format '{{ index .Config.Labels "org.opencontainers.image.version" }}' intelmq-full:latest
+

Now restart your container, if you're using docker-compose you simply run:

docker-compose down
+

If you don't use docker-compose, you can restart a single container using:

docker ps | grep certat
+
+docker restart CONTAINER_ID
+

Source repository

If you have an editable installation, refer to the instructions in the /dev/guide.

Update the repository depending on your setup (e.g. [git pull origin master]).

And run the installation again:

pip install .
+sudo intelmqsetup
+

For editable installations (development only), run [pip install -e .] instead.

4. Upgrade configuration and check the installation

Go through NEWS.md and apply necessary adaptions to your setup. If you have adapted IntelMQ's code, also read the CHANGELOG.md.

Check your installation and configuration to detect any problems:

intelmqctl upgrade-config
+intelmqctl check
+

intelmqctl upgrade-config supports upgrades from one IntelMQ version to the succeeding. If you skip one or more IntelMQ versions, some automatic upgrades may not work and manual intervention may be necessary.

5. Start IntelMQ

intelmqctl start
+
\ No newline at end of file diff --git a/3.3.1/admin/utilities/bash-completion/index.html b/3.3.1/admin/utilities/bash-completion/index.html new file mode 100644 index 0000000000..f3c17bab44 --- /dev/null +++ b/3.3.1/admin/utilities/bash-completion/index.html @@ -0,0 +1,16 @@ + Bash Completion - IntelMQ
Skip to content

Bash Completion

To enable bash completion on intelmqctl and intelmqdump in order to help you run the commands in an easy manner, follow the installation process here.

Bug

This section of the documentation is currently incomplete and will be added later.

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I(...e).pipe(ne(o=>h(o,"change").pipe(m(()=>o))),Q(e[r]),m(o=>({index:e.indexOf(o),color:{media:o.getAttribute("data-md-color-media"),scheme:o.getAttribute("data-md-color-scheme"),primary:o.getAttribute("data-md-color-primary"),accent:o.getAttribute("data-md-color-accent")}})),G(1))}function Gn(e){let t=P("input",e),r=x("meta",{name:"theme-color"});document.head.appendChild(r);let o=x("meta",{name:"color-scheme"});document.head.appendChild(o);let n=Pt("(prefers-color-scheme: light)");return C(()=>{let i=new g;return i.subscribe(a=>{if(document.body.setAttribute("data-md-color-switching",""),a.color.media==="(prefers-color-scheme)"){let s=matchMedia("(prefers-color-scheme: light)"),p=document.querySelector(s.matches?"[data-md-color-media='(prefers-color-scheme: light)']":"[data-md-color-media='(prefers-color-scheme: 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Jr=Lt(Br());function Za(e){e.setAttribute("data-md-copying","");let t=e.closest("[data-copy]"),r=t?t.getAttribute("data-copy"):e.innerText;return e.removeAttribute("data-md-copying"),r.trimEnd()}function Xn({alert$:e}){Jr.default.isSupported()&&new j(t=>{new Jr.default("[data-clipboard-target], [data-clipboard-text]",{text:r=>r.getAttribute("data-clipboard-text")||Za(R(r.getAttribute("data-clipboard-target")))}).on("success",r=>t.next(r))}).pipe(w(t=>{t.trigger.focus()}),m(()=>Ee("clipboard.copied"))).subscribe(e)}function Zn(e,t){return e.protocol=t.protocol,e.hostname=t.hostname,e}function es(e,t){let r=new Map;for(let o of P("url",e)){let n=R("loc",o),i=[Zn(new URL(n.textContent),t)];r.set(`${i[0]}`,i);for(let a of P("[rel=alternate]",o)){let s=a.getAttribute("href");s!=null&&i.push(Zn(new URL(s),t))}}return r}function ur(e){return fn(new URL("sitemap.xml",e)).pipe(m(t=>es(t,new URL(e))),de(()=>I(new Map)))}function ts(e,t){if(!(e.target instanceof Element))return S;let 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g,o=r.pipe(Z(),ie(!0));z([t.pipe(Ae(jt)),r],(i,a)=>a).pipe(ee("value")).subscribe(({value:i})=>t.next({type:2,data:i})),r.pipe(ee("focus")).subscribe(({focus:i})=>{i&&Je("search",i)}),h(e.form,"reset").pipe(U(o)).subscribe(()=>e.focus());let n=R("header [for=__search]");return h(n,"click").subscribe(()=>e.focus()),is(e,{worker$:t}).pipe(w(i=>r.next(i)),_(()=>r.complete()),m(i=>$({ref:e},i)),G(1))}function ci(e,{worker$:t,query$:r}){let o=new g,n=rn(e.parentElement).pipe(b(Boolean)),i=e.parentElement,a=R(":scope > :first-child",e),s=R(":scope > :last-child",e);ze("search").subscribe(l=>s.setAttribute("role",l?"list":"presentation")),o.pipe(re(r),Ur(t.pipe(Ae(jt)))).subscribe(([{items:l},{value:f}])=>{switch(l.length){case 0:a.textContent=f.length?Ee("search.result.none"):Ee("search.result.placeholder");break;case 1:a.textContent=Ee("search.result.one");break;default:let u=sr(l.length);a.textContent=Ee("search.result.other",u)}});let p=o.pipe(w(()=>s.innerHTML=""),v(({items:l})=>O(I(...l.slice(0,10)),I(...l.slice(10)).pipe(Be(4),Vr(n),v(([f])=>f)))),m(Mn),pe());return p.subscribe(l=>s.appendChild(l)),p.pipe(ne(l=>{let f=fe("details",l);return typeof f=="undefined"?S:h(f,"toggle").pipe(U(o),m(()=>f))})).subscribe(l=>{l.open===!1&&l.offsetTop<=i.scrollTop&&i.scrollTo({top:l.offsetTop})}),t.pipe(b(dr),m(({data:l})=>l)).pipe(w(l=>o.next(l)),_(()=>o.complete()),m(l=>$({ref:e},l)))}function as(e,{query$:t}){return t.pipe(m(({value:r})=>{let o=ye();return o.hash="",r=r.replace(/\s+/g,"+").replace(/&/g,"%26").replace(/=/g,"%3D"),o.search=`q=${r}`,{url:o}}))}function pi(e,t){let r=new g,o=r.pipe(Z(),ie(!0));return r.subscribe(({url:n})=>{e.setAttribute("data-clipboard-text",e.href),e.href=`${n}`}),h(e,"click").pipe(U(o)).subscribe(n=>n.preventDefault()),as(e,t).pipe(w(n=>r.next(n)),_(()=>r.complete()),m(n=>$({ref:e},n)))}function li(e,{worker$:t,keyboard$:r}){let o=new g,n=Se("search-query"),i=O(h(n,"keydown"),h(n,"focus")).pipe(ve(se),m(()=>n.value),K());return o.pipe(He(i),m(([{suggest:s},p])=>{let c=p.split(/([\s-]+)/);if(s!=null&&s.length&&c[c.length-1]){let l=s[s.length-1];l.startsWith(c[c.length-1])&&(c[c.length-1]=l)}else c.length=0;return c})).subscribe(s=>e.innerHTML=s.join("").replace(/\s/g," ")),r.pipe(b(({mode:s})=>s==="search")).subscribe(s=>{switch(s.type){case"ArrowRight":e.innerText.length&&n.selectionStart===n.value.length&&(n.value=e.innerText);break}}),t.pipe(b(dr),m(({data:s})=>s)).pipe(w(s=>o.next(s)),_(()=>o.complete()),m(()=>({ref:e})))}function mi(e,{index$:t,keyboard$:r}){let o=xe();try{let n=ii(o.search,t),i=Se("search-query",e),a=Se("search-result",e);h(e,"click").pipe(b(({target:p})=>p instanceof Element&&!!p.closest("a"))).subscribe(()=>Je("search",!1)),r.pipe(b(({mode:p})=>p==="search")).subscribe(p=>{let c=Ie();switch(p.type){case"Enter":if(c===i){let l=new Map;for(let f of P(":first-child [href]",a)){let 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z([t,r.pipe(Q(ye()),b(o=>!!o.searchParams.get("h")))]).pipe(m(([o,n])=>ni(o.config)(n.searchParams.get("h"))),m(o=>{var a;let n=new Map,i=document.createNodeIterator(e,NodeFilter.SHOW_TEXT);for(let s=i.nextNode();s;s=i.nextNode())if((a=s.parentElement)!=null&&a.offsetHeight){let p=s.textContent,c=o(p);c.length>p.length&&n.set(s,c)}for(let[s,p]of n){let{childNodes:c}=x("span",null,p);s.replaceWith(...Array.from(c))}return{ref:e,nodes:n}}))}function ss(e,{viewport$:t,main$:r}){let o=e.closest(".md-grid"),n=o.offsetTop-o.parentElement.offsetTop;return z([r,t]).pipe(m(([{offset:i,height:a},{offset:{y:s}}])=>(a=a+Math.min(n,Math.max(0,s-i))-n,{height:a,locked:s>=i+n})),K((i,a)=>i.height===a.height&&i.locked===a.locked))}function Xr(e,o){var n=o,{header$:t}=n,r=ao(n,["header$"]);let i=R(".md-sidebar__scrollwrap",e),{y:a}=Ve(i);return C(()=>{let s=new g,p=s.pipe(Z(),ie(!0)),c=s.pipe(Le(0,me));return c.pipe(re(t)).subscribe({next([{height:l},{height:f}]){i.style.height=`${l-2*a}px`,e.style.top=`${f}px`},complete(){i.style.height="",e.style.top=""}}),c.pipe(Ae()).subscribe(()=>{for(let l of P(".md-nav__link--active[href]",e)){if(!l.clientHeight)continue;let f=l.closest(".md-sidebar__scrollwrap");if(typeof f!="undefined"){let u=l.offsetTop-f.offsetTop,{height:d}=ce(f);f.scrollTo({top:u-d/2})}}}),ue(P("label[tabindex]",e)).pipe(ne(l=>h(l,"click").pipe(ve(se),m(()=>l),U(p)))).subscribe(l=>{let f=R(`[id="${l.htmlFor}"]`);R(`[aria-labelledby="${l.id}"]`).setAttribute("aria-expanded",`${f.checked}`)}),ss(e,r).pipe(w(l=>s.next(l)),_(()=>s.complete()),m(l=>$({ref:e},l)))})}function ui(e,t){if(typeof t!="undefined"){let r=`https://api.github.com/repos/${e}/${t}`;return st(je(`${r}/releases/latest`).pipe(de(()=>S),m(o=>({version:o.tag_name})),De({})),je(r).pipe(de(()=>S),m(o=>({stars:o.stargazers_count,forks:o.forks_count})),De({}))).pipe(m(([o,n])=>$($({},o),n)))}else{let r=`https://api.github.com/users/${e}`;return je(r).pipe(m(o=>({repositories:o.public_repos})),De({}))}}function di(e,t){let r=`https://${e}/api/v4/projects/${encodeURIComponent(t)}`;return st(je(`${r}/releases/permalink/latest`).pipe(de(()=>S),m(({tag_name:o})=>({version:o})),De({})),je(r).pipe(de(()=>S),m(({star_count:o,forks_count:n})=>({stars:o,forks:n})),De({}))).pipe(m(([o,n])=>$($({},o),n)))}function hi(e){let t=e.match(/^.+github\.com\/([^/]+)\/?([^/]+)?/i);if(t){let[,r,o]=t;return ui(r,o)}if(t=e.match(/^.+?([^/]*gitlab[^/]+)\/(.+?)\/?$/i),t){let[,r,o]=t;return di(r,o)}return S}var cs;function ps(e){return cs||(cs=C(()=>{let t=__md_get("__source",sessionStorage);if(t)return I(t);if(ae("consent").length){let o=__md_get("__consent");if(!(o&&o.github))return S}return hi(e.href).pipe(w(o=>__md_set("__source",o,sessionStorage)))}).pipe(de(()=>S),b(t=>Object.keys(t).length>0),m(t=>({facts:t})),G(1)))}function bi(e){let t=R(":scope > :last-child",e);return C(()=>{let r=new g;return 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n=t.pipe(m(({offset:{y:a}})=>a),Be(2,1),m(([a,s])=>a>s&&s>0),K()),i=r.pipe(m(({active:a})=>a));return z([i,n]).pipe(m(([a,s])=>!(a&&s)),K(),U(o.pipe(Ce(1))),ie(!0),ct({delay:250}),m(a=>({hidden:a})))}function yi(e,{viewport$:t,header$:r,main$:o,target$:n}){let i=new g,a=i.pipe(Z(),ie(!0));return i.subscribe({next({hidden:s}){e.hidden=s,s?(e.setAttribute("tabindex","-1"),e.blur()):e.removeAttribute("tabindex")},complete(){e.style.top="",e.hidden=!0,e.removeAttribute("tabindex")}}),r.pipe(U(a),ee("height")).subscribe(({height:s})=>{e.style.top=`${s+16}px`}),h(e,"click").subscribe(s=>{s.preventDefault(),window.scrollTo({top:0})}),fs(e,{viewport$:t,main$:o,target$:n}).pipe(w(s=>i.next(s)),_(()=>i.complete()),m(s=>$({ref:e},s)))}function xi({document$:e,viewport$:t}){e.pipe(v(()=>P(".md-ellipsis")),ne(r=>tt(r).pipe(U(e.pipe(Ce(1))),b(o=>o),m(()=>r),Te(1))),b(r=>r.offsetWidth{let o=r.innerText,n=r.closest("a")||r;return n.title=o,B("content.tooltips")?mt(n,{viewport$:t}).pipe(U(e.pipe(Ce(1))),_(()=>n.removeAttribute("title"))):S})).subscribe(),B("content.tooltips")&&e.pipe(v(()=>P(".md-status")),ne(r=>mt(r,{viewport$:t}))).subscribe()}function Ei({document$:e,tablet$:t}){e.pipe(v(()=>P(".md-toggle--indeterminate")),w(r=>{r.indeterminate=!0,r.checked=!1}),ne(r=>h(r,"change").pipe(Dr(()=>r.classList.contains("md-toggle--indeterminate")),m(()=>r))),re(t)).subscribe(([r,o])=>{r.classList.remove("md-toggle--indeterminate"),o&&(r.checked=!1)})}function us(){return/(iPad|iPhone|iPod)/.test(navigator.userAgent)}function wi({document$:e}){e.pipe(v(()=>P("[data-md-scrollfix]")),w(t=>t.removeAttribute("data-md-scrollfix")),b(us),ne(t=>h(t,"touchstart").pipe(m(()=>t)))).subscribe(t=>{let r=t.scrollTop;r===0?t.scrollTop=1:r+t.offsetHeight===t.scrollHeight&&(t.scrollTop=r-1)})}function 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t!="undefined"&<(t);break;case"n":case".":let r=fe("link[rel=next]");typeof r!="undefined"&<(r);break;case"Enter":let o=Ie();o instanceof HTMLLabelElement&&o.click()}});xi({viewport$:Oe,document$:ot});Ei({document$:ot,tablet$:hr});wi({document$:ot});Ti({viewport$:Oe,tablet$:hr});var rt=Qn(Se("header"),{viewport$:Oe}),Ft=ot.pipe(m(()=>Se("main")),v(e=>Bn(e,{viewport$:Oe,header$:rt})),G(1)),hs=O(...ae("consent").map(e=>xn(e,{target$:Mt})),...ae("dialog").map(e=>zn(e,{alert$:to})),...ae("header").map(e=>Kn(e,{viewport$:Oe,header$:rt,main$:Ft})),...ae("palette").map(e=>Gn(e)),...ae("progress").map(e=>Jn(e,{progress$:ro})),...ae("search").map(e=>mi(e,{index$:Li,keyboard$:eo})),...ae("source").map(e=>bi(e))),bs=C(()=>O(...ae("announce").map(e=>yn(e)),...ae("content").map(e=>Nn(e,{viewport$:Oe,target$:Mt,print$:Mi})),...ae("content").map(e=>B("search.highlight")?fi(e,{index$:Li,location$:Wt}):S),...ae("header-title").map(e=>Yn(e,{viewport$:Oe,header$:rt})),...ae("sidebar").map(e=>e.getAttribute("data-md-type")==="navigation"?Nr(Oi,()=>Xr(e,{viewport$:Oe,header$:rt,main$:Ft})):Nr(hr,()=>Xr(e,{viewport$:Oe,header$:rt,main$:Ft}))),...ae("tabs").map(e=>vi(e,{viewport$:Oe,header$:rt})),...ae("toc").map(e=>gi(e,{viewport$:Oe,header$:rt,main$:Ft,target$:Mt})),...ae("top").map(e=>yi(e,{viewport$:Oe,header$:rt,main$:Ft,target$:Mt})))),_i=ot.pipe(v(()=>bs),Re(hs),G(1));_i.subscribe();window.document$=ot;window.location$=Wt;window.target$=Mt;window.keyboard$=eo;window.viewport$=Oe;window.tablet$=hr;window.screen$=Oi;window.print$=Mi;window.alert$=to;window.progress$=ro;window.component$=_i;})(); +//# sourceMappingURL=bundle.56dfad97.min.js.map + diff --git a/3.3.1/assets/javascripts/bundle.56dfad97.min.js.map b/3.3.1/assets/javascripts/bundle.56dfad97.min.js.map new file mode 100644 index 0000000000..eb83bdb3de --- /dev/null +++ b/3.3.1/assets/javascripts/bundle.56dfad97.min.js.map @@ -0,0 +1,7 @@ +{ + "version": 3, + "sources": ["node_modules/focus-visible/dist/focus-visible.js", "node_modules/escape-html/index.js", "node_modules/clipboard/dist/clipboard.js", "src/templates/assets/javascripts/bundle.ts", "node_modules/tslib/tslib.es6.mjs", "node_modules/rxjs/src/internal/util/isFunction.ts", "node_modules/rxjs/src/internal/util/createErrorClass.ts", "node_modules/rxjs/src/internal/util/UnsubscriptionError.ts", "node_modules/rxjs/src/internal/util/arrRemove.ts", "node_modules/rxjs/src/internal/Subscription.ts", "node_modules/rxjs/src/internal/config.ts", "node_modules/rxjs/src/internal/scheduler/timeoutProvider.ts", 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"node_modules/rxjs/src/internal/operators/shareReplay.ts", "node_modules/rxjs/src/internal/operators/skip.ts", "node_modules/rxjs/src/internal/operators/skipUntil.ts", "node_modules/rxjs/src/internal/operators/startWith.ts", "node_modules/rxjs/src/internal/operators/switchMap.ts", "node_modules/rxjs/src/internal/operators/takeUntil.ts", "node_modules/rxjs/src/internal/operators/takeWhile.ts", "node_modules/rxjs/src/internal/operators/tap.ts", "node_modules/rxjs/src/internal/operators/throttle.ts", "node_modules/rxjs/src/internal/operators/throttleTime.ts", "node_modules/rxjs/src/internal/operators/withLatestFrom.ts", "node_modules/rxjs/src/internal/operators/zip.ts", "node_modules/rxjs/src/internal/operators/zipWith.ts", "src/templates/assets/javascripts/browser/document/index.ts", "src/templates/assets/javascripts/browser/element/_/index.ts", "src/templates/assets/javascripts/browser/element/focus/index.ts", "src/templates/assets/javascripts/browser/element/hover/index.ts", 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"src/templates/assets/javascripts/patches/scrollfix/index.ts", "src/templates/assets/javascripts/patches/scrolllock/index.ts", "src/templates/assets/javascripts/polyfills/index.ts"], + "sourcesContent": ["(function (global, factory) {\n typeof exports === 'object' && typeof module !== 'undefined' ? factory() :\n typeof define === 'function' && define.amd ? define(factory) :\n (factory());\n}(this, (function () { 'use strict';\n\n /**\n * Applies the :focus-visible polyfill at the given scope.\n * A scope in this case is either the top-level Document or a Shadow Root.\n *\n * @param {(Document|ShadowRoot)} scope\n * @see https://github.com/WICG/focus-visible\n */\n function applyFocusVisiblePolyfill(scope) {\n var hadKeyboardEvent = true;\n var hadFocusVisibleRecently = false;\n var hadFocusVisibleRecentlyTimeout = null;\n\n var inputTypesAllowlist = {\n text: true,\n search: true,\n url: true,\n tel: true,\n email: true,\n password: true,\n number: true,\n date: true,\n month: true,\n week: true,\n time: true,\n datetime: true,\n 'datetime-local': true\n };\n\n /**\n * Helper function for legacy browsers and iframes which sometimes focus\n * elements like document, body, and non-interactive SVG.\n * @param {Element} el\n */\n function isValidFocusTarget(el) {\n if (\n el &&\n el !== document &&\n el.nodeName !== 'HTML' &&\n el.nodeName !== 'BODY' &&\n 'classList' in el &&\n 'contains' in el.classList\n ) {\n return true;\n }\n return false;\n }\n\n /**\n * Computes whether the given element should automatically trigger the\n * `focus-visible` class being added, i.e. whether it should always match\n * `:focus-visible` when focused.\n * @param {Element} el\n * @return {boolean}\n */\n function focusTriggersKeyboardModality(el) {\n var type = el.type;\n var tagName = el.tagName;\n\n if (tagName === 'INPUT' && inputTypesAllowlist[type] && !el.readOnly) {\n return true;\n }\n\n if (tagName === 'TEXTAREA' && !el.readOnly) {\n return true;\n }\n\n if (el.isContentEditable) {\n return true;\n }\n\n return false;\n }\n\n /**\n * Add the `focus-visible` class to the given element if it was not added by\n * the author.\n * @param {Element} el\n */\n function addFocusVisibleClass(el) {\n if (el.classList.contains('focus-visible')) {\n return;\n }\n el.classList.add('focus-visible');\n el.setAttribute('data-focus-visible-added', '');\n }\n\n /**\n * Remove the `focus-visible` class from the given element if it was not\n * originally added by the author.\n * @param {Element} el\n */\n function removeFocusVisibleClass(el) {\n if (!el.hasAttribute('data-focus-visible-added')) {\n return;\n }\n el.classList.remove('focus-visible');\n el.removeAttribute('data-focus-visible-added');\n }\n\n /**\n * If the most recent user interaction was via the keyboard;\n * and the key press did not include a meta, alt/option, or control key;\n * then the modality is keyboard. Otherwise, the modality is not keyboard.\n * Apply `focus-visible` to any current active element and keep track\n * of our keyboard modality state with `hadKeyboardEvent`.\n * @param {KeyboardEvent} e\n */\n function onKeyDown(e) {\n if (e.metaKey || e.altKey || e.ctrlKey) {\n return;\n }\n\n if (isValidFocusTarget(scope.activeElement)) {\n addFocusVisibleClass(scope.activeElement);\n }\n\n hadKeyboardEvent = true;\n }\n\n /**\n * If at any point a user clicks with a pointing device, ensure that we change\n * the modality away from keyboard.\n * This avoids the situation where a user presses a key on an already focused\n * element, and then clicks on a different element, focusing it with a\n * pointing device, while we still think we're in keyboard modality.\n * @param {Event} e\n */\n function onPointerDown(e) {\n hadKeyboardEvent = false;\n }\n\n /**\n * On `focus`, add the `focus-visible` class to the target if:\n * - the target received focus as a result of keyboard navigation, or\n * - the event target is an element that will likely require interaction\n * via the keyboard (e.g. a text box)\n * @param {Event} e\n */\n function onFocus(e) {\n // Prevent IE from focusing the document or HTML element.\n if (!isValidFocusTarget(e.target)) {\n return;\n }\n\n if (hadKeyboardEvent || focusTriggersKeyboardModality(e.target)) {\n addFocusVisibleClass(e.target);\n }\n }\n\n /**\n * On `blur`, remove the `focus-visible` class from the target.\n * @param {Event} e\n */\n function onBlur(e) {\n if (!isValidFocusTarget(e.target)) {\n return;\n }\n\n if (\n e.target.classList.contains('focus-visible') ||\n e.target.hasAttribute('data-focus-visible-added')\n ) {\n // To detect a tab/window switch, we look for a blur event followed\n // rapidly by a visibility change.\n // If we don't see a visibility change within 100ms, it's probably a\n // regular focus change.\n hadFocusVisibleRecently = true;\n window.clearTimeout(hadFocusVisibleRecentlyTimeout);\n hadFocusVisibleRecentlyTimeout = window.setTimeout(function() {\n hadFocusVisibleRecently = false;\n }, 100);\n removeFocusVisibleClass(e.target);\n }\n }\n\n /**\n * If the user changes tabs, keep track of whether or not the previously\n * focused element had .focus-visible.\n * @param {Event} e\n */\n function onVisibilityChange(e) {\n if (document.visibilityState === 'hidden') {\n // If the tab becomes active again, the browser will handle calling focus\n // on the element (Safari actually calls it twice).\n // If this tab change caused a blur on an element with focus-visible,\n // re-apply the class when the user switches back to the tab.\n if (hadFocusVisibleRecently) {\n hadKeyboardEvent = true;\n }\n addInitialPointerMoveListeners();\n }\n }\n\n /**\n * Add a group of listeners to detect usage of any pointing devices.\n * These listeners will be added when the polyfill first loads, and anytime\n * the window is blurred, so that they are active when the window regains\n * focus.\n */\n function addInitialPointerMoveListeners() {\n document.addEventListener('mousemove', onInitialPointerMove);\n document.addEventListener('mousedown', onInitialPointerMove);\n document.addEventListener('mouseup', onInitialPointerMove);\n document.addEventListener('pointermove', onInitialPointerMove);\n document.addEventListener('pointerdown', onInitialPointerMove);\n document.addEventListener('pointerup', onInitialPointerMove);\n document.addEventListener('touchmove', onInitialPointerMove);\n document.addEventListener('touchstart', onInitialPointerMove);\n document.addEventListener('touchend', onInitialPointerMove);\n }\n\n function removeInitialPointerMoveListeners() {\n document.removeEventListener('mousemove', onInitialPointerMove);\n document.removeEventListener('mousedown', onInitialPointerMove);\n document.removeEventListener('mouseup', onInitialPointerMove);\n document.removeEventListener('pointermove', onInitialPointerMove);\n document.removeEventListener('pointerdown', onInitialPointerMove);\n document.removeEventListener('pointerup', onInitialPointerMove);\n document.removeEventListener('touchmove', onInitialPointerMove);\n document.removeEventListener('touchstart', onInitialPointerMove);\n document.removeEventListener('touchend', onInitialPointerMove);\n }\n\n /**\n * When the polfyill first loads, assume the user is in keyboard modality.\n * If any event is received from a pointing device (e.g. mouse, pointer,\n * touch), turn off keyboard modality.\n * This accounts for situations where focus enters the page from the URL bar.\n * @param {Event} e\n */\n function onInitialPointerMove(e) {\n // Work around a Safari quirk that fires a mousemove on whenever the\n // window blurs, even if you're tabbing out of the page. \u00AF\\_(\u30C4)_/\u00AF\n if (e.target.nodeName && e.target.nodeName.toLowerCase() === 'html') {\n return;\n }\n\n hadKeyboardEvent = false;\n removeInitialPointerMoveListeners();\n }\n\n // For some kinds of state, we are interested in changes at the global scope\n // only. For example, global pointer input, global key presses and global\n // visibility change should affect the state at every scope:\n document.addEventListener('keydown', onKeyDown, true);\n document.addEventListener('mousedown', onPointerDown, true);\n document.addEventListener('pointerdown', onPointerDown, true);\n document.addEventListener('touchstart', onPointerDown, true);\n document.addEventListener('visibilitychange', onVisibilityChange, true);\n\n addInitialPointerMoveListeners();\n\n // For focus and blur, we specifically care about state changes in the local\n // scope. This is because focus / blur events that originate from within a\n // shadow root are not re-dispatched from the host element if it was already\n // the active element in its own scope:\n scope.addEventListener('focus', onFocus, true);\n scope.addEventListener('blur', onBlur, true);\n\n // We detect that a node is a ShadowRoot by ensuring that it is a\n // DocumentFragment and also has a host property. This check covers native\n // implementation and polyfill implementation transparently. If we only cared\n // about the native implementation, we could just check if the scope was\n // an instance of a ShadowRoot.\n if (scope.nodeType === Node.DOCUMENT_FRAGMENT_NODE && scope.host) {\n // Since a ShadowRoot is a special kind of DocumentFragment, it does not\n // have a root element to add a class to. So, we add this attribute to the\n // host element instead:\n scope.host.setAttribute('data-js-focus-visible', '');\n } else if (scope.nodeType === Node.DOCUMENT_NODE) {\n document.documentElement.classList.add('js-focus-visible');\n document.documentElement.setAttribute('data-js-focus-visible', '');\n }\n }\n\n // It is important to wrap all references to global window and document in\n // these checks to support server-side rendering use cases\n // @see https://github.com/WICG/focus-visible/issues/199\n if (typeof window !== 'undefined' && typeof document !== 'undefined') {\n // Make the polyfill helper globally available. This can be used as a signal\n // to interested libraries that wish to coordinate with the polyfill for e.g.,\n // applying the polyfill to a shadow root:\n window.applyFocusVisiblePolyfill = applyFocusVisiblePolyfill;\n\n // Notify interested libraries of the polyfill's presence, in case the\n // polyfill was loaded lazily:\n var event;\n\n try {\n event = new CustomEvent('focus-visible-polyfill-ready');\n } catch (error) {\n // IE11 does not support using CustomEvent as a constructor directly:\n event = document.createEvent('CustomEvent');\n event.initCustomEvent('focus-visible-polyfill-ready', false, false, {});\n }\n\n window.dispatchEvent(event);\n }\n\n if (typeof document !== 'undefined') {\n // Apply the polyfill to the global document, so that no JavaScript\n // coordination is required to use the polyfill in the top-level document:\n applyFocusVisiblePolyfill(document);\n }\n\n})));\n", "/*!\n * escape-html\n * Copyright(c) 2012-2013 TJ Holowaychuk\n * Copyright(c) 2015 Andreas Lubbe\n * Copyright(c) 2015 Tiancheng \"Timothy\" Gu\n * MIT Licensed\n */\n\n'use strict';\n\n/**\n * Module variables.\n * @private\n */\n\nvar matchHtmlRegExp = /[\"'&<>]/;\n\n/**\n * Module exports.\n * @public\n */\n\nmodule.exports = escapeHtml;\n\n/**\n * Escape special characters in the given string of html.\n *\n * @param {string} string The string to escape for inserting into HTML\n * @return {string}\n * @public\n */\n\nfunction escapeHtml(string) {\n var str = '' + string;\n var match = matchHtmlRegExp.exec(str);\n\n if (!match) {\n return str;\n }\n\n var escape;\n var html = '';\n var index = 0;\n var lastIndex = 0;\n\n for (index = match.index; index < str.length; index++) {\n switch (str.charCodeAt(index)) {\n case 34: // \"\n escape = '"';\n break;\n case 38: // &\n escape = '&';\n break;\n case 39: // '\n escape = ''';\n break;\n case 60: // <\n escape = '<';\n break;\n case 62: // >\n escape = '>';\n break;\n default:\n continue;\n }\n\n if (lastIndex !== index) {\n html += str.substring(lastIndex, index);\n }\n\n lastIndex = index + 1;\n html += escape;\n }\n\n return lastIndex !== index\n ? html + str.substring(lastIndex, index)\n : html;\n}\n", "/*!\n * clipboard.js v2.0.11\n * https://clipboardjs.com/\n *\n * Licensed MIT \u00A9 Zeno Rocha\n */\n(function webpackUniversalModuleDefinition(root, factory) {\n\tif(typeof exports === 'object' && typeof module === 'object')\n\t\tmodule.exports = factory();\n\telse if(typeof define === 'function' && define.amd)\n\t\tdefine([], factory);\n\telse if(typeof exports === 'object')\n\t\texports[\"ClipboardJS\"] = factory();\n\telse\n\t\troot[\"ClipboardJS\"] = factory();\n})(this, function() {\nreturn /******/ (function() { // webpackBootstrap\n/******/ \tvar __webpack_modules__ = ({\n\n/***/ 686:\n/***/ (function(__unused_webpack_module, __webpack_exports__, __webpack_require__) {\n\n\"use strict\";\n\n// EXPORTS\n__webpack_require__.d(__webpack_exports__, {\n \"default\": function() { return /* binding */ clipboard; }\n});\n\n// EXTERNAL MODULE: ./node_modules/tiny-emitter/index.js\nvar tiny_emitter = __webpack_require__(279);\nvar tiny_emitter_default = /*#__PURE__*/__webpack_require__.n(tiny_emitter);\n// EXTERNAL MODULE: ./node_modules/good-listener/src/listen.js\nvar listen = __webpack_require__(370);\nvar listen_default = /*#__PURE__*/__webpack_require__.n(listen);\n// EXTERNAL MODULE: ./node_modules/select/src/select.js\nvar src_select = __webpack_require__(817);\nvar select_default = /*#__PURE__*/__webpack_require__.n(src_select);\n;// CONCATENATED MODULE: ./src/common/command.js\n/**\n * Executes a given operation type.\n * @param {String} type\n * @return {Boolean}\n */\nfunction command(type) {\n try {\n return document.execCommand(type);\n } catch (err) {\n return false;\n }\n}\n;// CONCATENATED MODULE: ./src/actions/cut.js\n\n\n/**\n * Cut action wrapper.\n * @param {String|HTMLElement} target\n * @return {String}\n */\n\nvar ClipboardActionCut = function ClipboardActionCut(target) {\n var selectedText = select_default()(target);\n command('cut');\n return selectedText;\n};\n\n/* harmony default export */ var actions_cut = (ClipboardActionCut);\n;// CONCATENATED MODULE: ./src/common/create-fake-element.js\n/**\n * Creates a fake textarea element with a value.\n * @param {String} value\n * @return {HTMLElement}\n */\nfunction createFakeElement(value) {\n var isRTL = document.documentElement.getAttribute('dir') === 'rtl';\n var fakeElement = document.createElement('textarea'); // Prevent zooming on iOS\n\n fakeElement.style.fontSize = '12pt'; // Reset box model\n\n fakeElement.style.border = '0';\n fakeElement.style.padding = '0';\n fakeElement.style.margin = '0'; // Move element out of screen horizontally\n\n fakeElement.style.position = 'absolute';\n fakeElement.style[isRTL ? 'right' : 'left'] = '-9999px'; // Move element to the same position vertically\n\n var yPosition = window.pageYOffset || document.documentElement.scrollTop;\n fakeElement.style.top = \"\".concat(yPosition, \"px\");\n fakeElement.setAttribute('readonly', '');\n fakeElement.value = value;\n return fakeElement;\n}\n;// CONCATENATED MODULE: ./src/actions/copy.js\n\n\n\n/**\n * Create fake copy action wrapper using a fake element.\n * @param {String} target\n * @param {Object} options\n * @return {String}\n */\n\nvar fakeCopyAction = function fakeCopyAction(value, options) {\n var fakeElement = createFakeElement(value);\n options.container.appendChild(fakeElement);\n var selectedText = select_default()(fakeElement);\n command('copy');\n fakeElement.remove();\n return selectedText;\n};\n/**\n * Copy action wrapper.\n * @param {String|HTMLElement} target\n * @param {Object} options\n * @return {String}\n */\n\n\nvar ClipboardActionCopy = function ClipboardActionCopy(target) {\n var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {\n container: document.body\n };\n var selectedText = '';\n\n if (typeof target === 'string') {\n selectedText = fakeCopyAction(target, options);\n } else if (target instanceof HTMLInputElement && !['text', 'search', 'url', 'tel', 'password'].includes(target === null || target === void 0 ? void 0 : target.type)) {\n // If input type doesn't support `setSelectionRange`. Simulate it. https://developer.mozilla.org/en-US/docs/Web/API/HTMLInputElement/setSelectionRange\n selectedText = fakeCopyAction(target.value, options);\n } else {\n selectedText = select_default()(target);\n command('copy');\n }\n\n return selectedText;\n};\n\n/* harmony default export */ var actions_copy = (ClipboardActionCopy);\n;// CONCATENATED MODULE: ./src/actions/default.js\nfunction _typeof(obj) { \"@babel/helpers - typeof\"; if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return _typeof(obj); }\n\n\n\n/**\n * Inner function which performs selection from either `text` or `target`\n * properties and then executes copy or cut operations.\n * @param {Object} options\n */\n\nvar ClipboardActionDefault = function ClipboardActionDefault() {\n var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n // Defines base properties passed from constructor.\n var _options$action = options.action,\n action = _options$action === void 0 ? 'copy' : _options$action,\n container = options.container,\n target = options.target,\n text = options.text; // Sets the `action` to be performed which can be either 'copy' or 'cut'.\n\n if (action !== 'copy' && action !== 'cut') {\n throw new Error('Invalid \"action\" value, use either \"copy\" or \"cut\"');\n } // Sets the `target` property using an element that will be have its content copied.\n\n\n if (target !== undefined) {\n if (target && _typeof(target) === 'object' && target.nodeType === 1) {\n if (action === 'copy' && target.hasAttribute('disabled')) {\n throw new Error('Invalid \"target\" attribute. Please use \"readonly\" instead of \"disabled\" attribute');\n }\n\n if (action === 'cut' && (target.hasAttribute('readonly') || target.hasAttribute('disabled'))) {\n throw new Error('Invalid \"target\" attribute. You can\\'t cut text from elements with \"readonly\" or \"disabled\" attributes');\n }\n } else {\n throw new Error('Invalid \"target\" value, use a valid Element');\n }\n } // Define selection strategy based on `text` property.\n\n\n if (text) {\n return actions_copy(text, {\n container: container\n });\n } // Defines which selection strategy based on `target` property.\n\n\n if (target) {\n return action === 'cut' ? actions_cut(target) : actions_copy(target, {\n container: container\n });\n }\n};\n\n/* harmony default export */ var actions_default = (ClipboardActionDefault);\n;// CONCATENATED MODULE: ./src/clipboard.js\nfunction clipboard_typeof(obj) { \"@babel/helpers - typeof\"; if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { clipboard_typeof = function _typeof(obj) { return typeof obj; }; } else { clipboard_typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return clipboard_typeof(obj); }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }\n\nfunction _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function\"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }\n\nfunction _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }\n\nfunction _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }\n\nfunction _possibleConstructorReturn(self, call) { if (call && (clipboard_typeof(call) === \"object\" || typeof call === \"function\")) { return call; } return _assertThisInitialized(self); }\n\nfunction _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return self; }\n\nfunction _isNativeReflectConstruct() { if (typeof Reflect === \"undefined\" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === \"function\") return true; try { Date.prototype.toString.call(Reflect.construct(Date, [], function () {})); return true; } catch (e) { return false; } }\n\nfunction _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }\n\n\n\n\n\n\n/**\n * Helper function to retrieve attribute value.\n * @param {String} suffix\n * @param {Element} element\n */\n\nfunction getAttributeValue(suffix, element) {\n var attribute = \"data-clipboard-\".concat(suffix);\n\n if (!element.hasAttribute(attribute)) {\n return;\n }\n\n return element.getAttribute(attribute);\n}\n/**\n * Base class which takes one or more elements, adds event listeners to them,\n * and instantiates a new `ClipboardAction` on each click.\n */\n\n\nvar Clipboard = /*#__PURE__*/function (_Emitter) {\n _inherits(Clipboard, _Emitter);\n\n var _super = _createSuper(Clipboard);\n\n /**\n * @param {String|HTMLElement|HTMLCollection|NodeList} trigger\n * @param {Object} options\n */\n function Clipboard(trigger, options) {\n var _this;\n\n _classCallCheck(this, Clipboard);\n\n _this = _super.call(this);\n\n _this.resolveOptions(options);\n\n _this.listenClick(trigger);\n\n return _this;\n }\n /**\n * Defines if attributes would be resolved using internal setter functions\n * or custom functions that were passed in the constructor.\n * @param {Object} options\n */\n\n\n _createClass(Clipboard, [{\n key: \"resolveOptions\",\n value: function resolveOptions() {\n var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n this.action = typeof options.action === 'function' ? options.action : this.defaultAction;\n this.target = typeof options.target === 'function' ? options.target : this.defaultTarget;\n this.text = typeof options.text === 'function' ? options.text : this.defaultText;\n this.container = clipboard_typeof(options.container) === 'object' ? options.container : document.body;\n }\n /**\n * Adds a click event listener to the passed trigger.\n * @param {String|HTMLElement|HTMLCollection|NodeList} trigger\n */\n\n }, {\n key: \"listenClick\",\n value: function listenClick(trigger) {\n var _this2 = this;\n\n this.listener = listen_default()(trigger, 'click', function (e) {\n return _this2.onClick(e);\n });\n }\n /**\n * Defines a new `ClipboardAction` on each click event.\n * @param {Event} e\n */\n\n }, {\n key: \"onClick\",\n value: function onClick(e) {\n var trigger = e.delegateTarget || e.currentTarget;\n var action = this.action(trigger) || 'copy';\n var text = actions_default({\n action: action,\n container: this.container,\n target: this.target(trigger),\n text: this.text(trigger)\n }); // Fires an event based on the copy operation result.\n\n this.emit(text ? 'success' : 'error', {\n action: action,\n text: text,\n trigger: trigger,\n clearSelection: function clearSelection() {\n if (trigger) {\n trigger.focus();\n }\n\n window.getSelection().removeAllRanges();\n }\n });\n }\n /**\n * Default `action` lookup function.\n * @param {Element} trigger\n */\n\n }, {\n key: \"defaultAction\",\n value: function defaultAction(trigger) {\n return getAttributeValue('action', trigger);\n }\n /**\n * Default `target` lookup function.\n * @param {Element} trigger\n */\n\n }, {\n key: \"defaultTarget\",\n value: function defaultTarget(trigger) {\n var selector = getAttributeValue('target', trigger);\n\n if (selector) {\n return document.querySelector(selector);\n }\n }\n /**\n * Allow fire programmatically a copy action\n * @param {String|HTMLElement} target\n * @param {Object} options\n * @returns Text copied.\n */\n\n }, {\n key: \"defaultText\",\n\n /**\n * Default `text` lookup function.\n * @param {Element} trigger\n */\n value: function defaultText(trigger) {\n return getAttributeValue('text', trigger);\n }\n /**\n * Destroy lifecycle.\n */\n\n }, {\n key: \"destroy\",\n value: function destroy() {\n this.listener.destroy();\n }\n }], [{\n key: \"copy\",\n value: function copy(target) {\n var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {\n container: document.body\n };\n return actions_copy(target, options);\n }\n /**\n * Allow fire programmatically a cut action\n * @param {String|HTMLElement} target\n * @returns Text cutted.\n */\n\n }, {\n key: \"cut\",\n value: function cut(target) {\n return actions_cut(target);\n }\n /**\n * Returns the support of the given action, or all actions if no action is\n * given.\n * @param {String} [action]\n */\n\n }, {\n key: \"isSupported\",\n value: function isSupported() {\n var action = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : ['copy', 'cut'];\n var actions = typeof action === 'string' ? [action] : action;\n var support = !!document.queryCommandSupported;\n actions.forEach(function (action) {\n support = support && !!document.queryCommandSupported(action);\n });\n return support;\n }\n }]);\n\n return Clipboard;\n}((tiny_emitter_default()));\n\n/* harmony default export */ var clipboard = (Clipboard);\n\n/***/ }),\n\n/***/ 828:\n/***/ (function(module) {\n\nvar DOCUMENT_NODE_TYPE = 9;\n\n/**\n * A polyfill for Element.matches()\n */\nif (typeof Element !== 'undefined' && !Element.prototype.matches) {\n var proto = Element.prototype;\n\n proto.matches = proto.matchesSelector ||\n proto.mozMatchesSelector ||\n proto.msMatchesSelector ||\n proto.oMatchesSelector ||\n proto.webkitMatchesSelector;\n}\n\n/**\n * Finds the closest parent that matches a selector.\n *\n * @param {Element} element\n * @param {String} selector\n * @return {Function}\n */\nfunction closest (element, selector) {\n while (element && element.nodeType !== DOCUMENT_NODE_TYPE) {\n if (typeof element.matches === 'function' &&\n element.matches(selector)) {\n return element;\n }\n element = element.parentNode;\n }\n}\n\nmodule.exports = closest;\n\n\n/***/ }),\n\n/***/ 438:\n/***/ (function(module, __unused_webpack_exports, __webpack_require__) {\n\nvar closest = __webpack_require__(828);\n\n/**\n * Delegates event to a selector.\n *\n * @param {Element} element\n * @param {String} selector\n * @param {String} type\n * @param {Function} callback\n * @param {Boolean} useCapture\n * @return {Object}\n */\nfunction _delegate(element, selector, type, callback, useCapture) {\n var listenerFn = listener.apply(this, arguments);\n\n element.addEventListener(type, listenerFn, useCapture);\n\n return {\n destroy: function() {\n element.removeEventListener(type, listenerFn, useCapture);\n }\n }\n}\n\n/**\n * Delegates event to a selector.\n *\n * @param {Element|String|Array} [elements]\n * @param {String} selector\n * @param {String} type\n * @param {Function} callback\n * @param {Boolean} useCapture\n * @return {Object}\n */\nfunction delegate(elements, selector, type, callback, useCapture) {\n // Handle the regular Element usage\n if (typeof elements.addEventListener === 'function') {\n return _delegate.apply(null, arguments);\n }\n\n // Handle Element-less usage, it defaults to global delegation\n if (typeof type === 'function') {\n // Use `document` as the first parameter, then apply arguments\n // This is a short way to .unshift `arguments` without running into deoptimizations\n return _delegate.bind(null, document).apply(null, arguments);\n }\n\n // Handle Selector-based usage\n if (typeof elements === 'string') {\n elements = document.querySelectorAll(elements);\n }\n\n // Handle Array-like based usage\n return Array.prototype.map.call(elements, function (element) {\n return _delegate(element, selector, type, callback, useCapture);\n });\n}\n\n/**\n * Finds closest match and invokes callback.\n *\n * @param {Element} element\n * @param {String} selector\n * @param {String} type\n * @param {Function} callback\n * @return {Function}\n */\nfunction listener(element, selector, type, callback) {\n return function(e) {\n e.delegateTarget = closest(e.target, selector);\n\n if (e.delegateTarget) {\n callback.call(element, e);\n }\n }\n}\n\nmodule.exports = delegate;\n\n\n/***/ }),\n\n/***/ 879:\n/***/ (function(__unused_webpack_module, exports) {\n\n/**\n * Check if argument is a HTML element.\n *\n * @param {Object} value\n * @return {Boolean}\n */\nexports.node = function(value) {\n return value !== undefined\n && value instanceof HTMLElement\n && value.nodeType === 1;\n};\n\n/**\n * Check if argument is a list of HTML elements.\n *\n * @param {Object} value\n * @return {Boolean}\n */\nexports.nodeList = function(value) {\n var type = Object.prototype.toString.call(value);\n\n return value !== undefined\n && (type === '[object NodeList]' || type === '[object HTMLCollection]')\n && ('length' in value)\n && (value.length === 0 || exports.node(value[0]));\n};\n\n/**\n * Check if argument is a string.\n *\n * @param {Object} value\n * @return {Boolean}\n */\nexports.string = function(value) {\n return typeof value === 'string'\n || value instanceof String;\n};\n\n/**\n * Check if argument is a function.\n *\n * @param {Object} value\n * @return {Boolean}\n */\nexports.fn = function(value) {\n var type = Object.prototype.toString.call(value);\n\n return type === '[object Function]';\n};\n\n\n/***/ }),\n\n/***/ 370:\n/***/ (function(module, __unused_webpack_exports, __webpack_require__) {\n\nvar is = __webpack_require__(879);\nvar delegate = __webpack_require__(438);\n\n/**\n * Validates all params and calls the right\n * listener function based on its target type.\n *\n * @param {String|HTMLElement|HTMLCollection|NodeList} target\n * @param {String} type\n * @param {Function} callback\n * @return {Object}\n */\nfunction listen(target, type, callback) {\n if (!target && !type && !callback) {\n throw new Error('Missing required arguments');\n }\n\n if (!is.string(type)) {\n throw new TypeError('Second argument must be a String');\n }\n\n if (!is.fn(callback)) {\n throw new TypeError('Third argument must be a Function');\n }\n\n if (is.node(target)) {\n return listenNode(target, type, callback);\n }\n else if (is.nodeList(target)) {\n return listenNodeList(target, type, callback);\n }\n else if (is.string(target)) {\n return listenSelector(target, type, callback);\n }\n else {\n throw new TypeError('First argument must be a String, HTMLElement, HTMLCollection, or NodeList');\n }\n}\n\n/**\n * Adds an event listener to a HTML element\n * and returns a remove listener function.\n *\n * @param {HTMLElement} node\n * @param {String} type\n * @param {Function} callback\n * @return {Object}\n */\nfunction listenNode(node, type, callback) {\n node.addEventListener(type, callback);\n\n return {\n destroy: function() {\n node.removeEventListener(type, callback);\n }\n }\n}\n\n/**\n * Add an event listener to a list of HTML elements\n * and returns a remove listener function.\n *\n * @param {NodeList|HTMLCollection} nodeList\n * @param {String} type\n * @param {Function} callback\n * @return {Object}\n */\nfunction listenNodeList(nodeList, type, callback) {\n Array.prototype.forEach.call(nodeList, function(node) {\n node.addEventListener(type, callback);\n });\n\n return {\n destroy: function() {\n Array.prototype.forEach.call(nodeList, function(node) {\n node.removeEventListener(type, callback);\n });\n }\n }\n}\n\n/**\n * Add an event listener to a selector\n * and returns a remove listener function.\n *\n * @param {String} selector\n * @param {String} type\n * @param {Function} callback\n * @return {Object}\n */\nfunction listenSelector(selector, type, callback) {\n return delegate(document.body, selector, type, callback);\n}\n\nmodule.exports = listen;\n\n\n/***/ }),\n\n/***/ 817:\n/***/ (function(module) {\n\nfunction select(element) {\n var selectedText;\n\n if (element.nodeName === 'SELECT') {\n element.focus();\n\n selectedText = element.value;\n }\n else if (element.nodeName === 'INPUT' || element.nodeName === 'TEXTAREA') {\n var isReadOnly = element.hasAttribute('readonly');\n\n if (!isReadOnly) {\n element.setAttribute('readonly', '');\n }\n\n element.select();\n element.setSelectionRange(0, element.value.length);\n\n if (!isReadOnly) {\n element.removeAttribute('readonly');\n }\n\n selectedText = element.value;\n }\n else {\n if (element.hasAttribute('contenteditable')) {\n element.focus();\n }\n\n var selection = window.getSelection();\n var range = document.createRange();\n\n range.selectNodeContents(element);\n selection.removeAllRanges();\n selection.addRange(range);\n\n selectedText = selection.toString();\n }\n\n return selectedText;\n}\n\nmodule.exports = select;\n\n\n/***/ }),\n\n/***/ 279:\n/***/ (function(module) {\n\nfunction E () {\n // Keep this empty so it's easier to inherit from\n // (via https://github.com/lipsmack from https://github.com/scottcorgan/tiny-emitter/issues/3)\n}\n\nE.prototype = {\n on: function (name, callback, ctx) {\n var e = this.e || (this.e = {});\n\n (e[name] || (e[name] = [])).push({\n fn: callback,\n ctx: ctx\n });\n\n return this;\n },\n\n once: function (name, callback, ctx) {\n var self = this;\n function listener () {\n self.off(name, listener);\n callback.apply(ctx, arguments);\n };\n\n listener._ = callback\n return this.on(name, listener, ctx);\n },\n\n emit: function (name) {\n var data = [].slice.call(arguments, 1);\n var evtArr = ((this.e || (this.e = {}))[name] || []).slice();\n var i = 0;\n var len = evtArr.length;\n\n for (i; i < len; i++) {\n evtArr[i].fn.apply(evtArr[i].ctx, data);\n }\n\n return this;\n },\n\n off: function (name, callback) {\n var e = this.e || (this.e = {});\n var evts = e[name];\n var liveEvents = [];\n\n if (evts && callback) {\n for (var i = 0, len = evts.length; i < len; i++) {\n if (evts[i].fn !== callback && evts[i].fn._ !== callback)\n liveEvents.push(evts[i]);\n }\n }\n\n // Remove event from queue to prevent memory leak\n // Suggested by https://github.com/lazd\n // Ref: https://github.com/scottcorgan/tiny-emitter/commit/c6ebfaa9bc973b33d110a84a307742b7cf94c953#commitcomment-5024910\n\n (liveEvents.length)\n ? e[name] = liveEvents\n : delete e[name];\n\n return this;\n }\n};\n\nmodule.exports = E;\nmodule.exports.TinyEmitter = E;\n\n\n/***/ })\n\n/******/ \t});\n/************************************************************************/\n/******/ \t// The module cache\n/******/ \tvar __webpack_module_cache__ = {};\n/******/ \t\n/******/ \t// The require function\n/******/ \tfunction __webpack_require__(moduleId) {\n/******/ \t\t// Check if module is in cache\n/******/ \t\tif(__webpack_module_cache__[moduleId]) {\n/******/ \t\t\treturn __webpack_module_cache__[moduleId].exports;\n/******/ \t\t}\n/******/ \t\t// Create a new module (and put it into the cache)\n/******/ \t\tvar module = __webpack_module_cache__[moduleId] = {\n/******/ \t\t\t// no module.id needed\n/******/ \t\t\t// no module.loaded needed\n/******/ \t\t\texports: {}\n/******/ \t\t};\n/******/ \t\n/******/ \t\t// Execute the module function\n/******/ \t\t__webpack_modules__[moduleId](module, module.exports, __webpack_require__);\n/******/ \t\n/******/ \t\t// Return the exports of the module\n/******/ \t\treturn module.exports;\n/******/ \t}\n/******/ \t\n/************************************************************************/\n/******/ \t/* webpack/runtime/compat get default export */\n/******/ \t!function() {\n/******/ \t\t// getDefaultExport function for compatibility with non-harmony modules\n/******/ \t\t__webpack_require__.n = function(module) {\n/******/ \t\t\tvar getter = module && module.__esModule ?\n/******/ \t\t\t\tfunction() { return module['default']; } :\n/******/ \t\t\t\tfunction() { return module; };\n/******/ \t\t\t__webpack_require__.d(getter, { a: getter });\n/******/ \t\t\treturn getter;\n/******/ \t\t};\n/******/ \t}();\n/******/ \t\n/******/ \t/* webpack/runtime/define property getters */\n/******/ \t!function() {\n/******/ \t\t// define getter functions for harmony exports\n/******/ \t\t__webpack_require__.d = function(exports, definition) {\n/******/ \t\t\tfor(var key in definition) {\n/******/ \t\t\t\tif(__webpack_require__.o(definition, key) && !__webpack_require__.o(exports, key)) {\n/******/ \t\t\t\t\tObject.defineProperty(exports, key, { enumerable: true, get: definition[key] });\n/******/ \t\t\t\t}\n/******/ \t\t\t}\n/******/ \t\t};\n/******/ \t}();\n/******/ \t\n/******/ \t/* webpack/runtime/hasOwnProperty shorthand */\n/******/ \t!function() {\n/******/ \t\t__webpack_require__.o = function(obj, prop) { return Object.prototype.hasOwnProperty.call(obj, prop); }\n/******/ \t}();\n/******/ \t\n/************************************************************************/\n/******/ \t// module exports must be returned from runtime so entry inlining is disabled\n/******/ \t// startup\n/******/ \t// Load entry module and return exports\n/******/ \treturn __webpack_require__(686);\n/******/ })()\n.default;\n});", "/*\n * Copyright (c) 2016-2024 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport \"focus-visible\"\n\nimport {\n EMPTY,\n NEVER,\n Observable,\n Subject,\n defer,\n delay,\n filter,\n map,\n merge,\n mergeWith,\n shareReplay,\n switchMap\n} from \"rxjs\"\n\nimport { configuration, feature } from \"./_\"\nimport {\n at,\n getActiveElement,\n getOptionalElement,\n requestJSON,\n setLocation,\n setToggle,\n watchDocument,\n watchKeyboard,\n watchLocation,\n watchLocationTarget,\n watchMedia,\n watchPrint,\n watchScript,\n watchViewport\n} from \"./browser\"\nimport {\n getComponentElement,\n getComponentElements,\n mountAnnounce,\n mountBackToTop,\n mountConsent,\n mountContent,\n mountDialog,\n mountHeader,\n mountHeaderTitle,\n mountPalette,\n mountProgress,\n mountSearch,\n mountSearchHiglight,\n mountSidebar,\n mountSource,\n mountTableOfContents,\n mountTabs,\n watchHeader,\n watchMain\n} from \"./components\"\nimport {\n SearchIndex,\n setupClipboardJS,\n setupInstantNavigation,\n setupVersionSelector\n} from \"./integrations\"\nimport {\n patchEllipsis,\n patchIndeterminate,\n patchScrollfix,\n patchScrolllock\n} from \"./patches\"\nimport \"./polyfills\"\n\n/* ----------------------------------------------------------------------------\n * Functions - @todo refactor\n * ------------------------------------------------------------------------- */\n\n/**\n * Fetch search index\n *\n * @returns Search index observable\n */\nfunction fetchSearchIndex(): Observable {\n if (location.protocol === \"file:\") {\n return watchScript(\n `${new URL(\"search/search_index.js\", config.base)}`\n )\n .pipe(\n // @ts-ignore - @todo fix typings\n map(() => __index),\n shareReplay(1)\n )\n } else {\n return requestJSON(\n new URL(\"search/search_index.json\", config.base)\n )\n }\n}\n\n/* ----------------------------------------------------------------------------\n * Application\n * ------------------------------------------------------------------------- */\n\n/* Yay, JavaScript is available */\ndocument.documentElement.classList.remove(\"no-js\")\ndocument.documentElement.classList.add(\"js\")\n\n/* Set up navigation observables and subjects */\nconst document$ = watchDocument()\nconst location$ = watchLocation()\nconst target$ = watchLocationTarget(location$)\nconst keyboard$ = watchKeyboard()\n\n/* Set up media observables */\nconst viewport$ = watchViewport()\nconst tablet$ = watchMedia(\"(min-width: 960px)\")\nconst screen$ = watchMedia(\"(min-width: 1220px)\")\nconst print$ = watchPrint()\n\n/* Retrieve search index, if search is enabled */\nconst config = configuration()\nconst index$ = document.forms.namedItem(\"search\")\n ? fetchSearchIndex()\n : NEVER\n\n/* Set up Clipboard.js integration */\nconst alert$ = new Subject()\nsetupClipboardJS({ alert$ })\n\n/* Set up progress indicator */\nconst progress$ = new Subject()\n\n/* Set up instant navigation, if enabled */\nif (feature(\"navigation.instant\"))\n setupInstantNavigation({ location$, viewport$, progress$ })\n .subscribe(document$)\n\n/* Set up version selector */\nif (config.version?.provider === \"mike\")\n setupVersionSelector({ document$ })\n\n/* Always close drawer and search on navigation */\nmerge(location$, target$)\n .pipe(\n delay(125)\n )\n .subscribe(() => {\n setToggle(\"drawer\", false)\n setToggle(\"search\", false)\n })\n\n/* Set up global keyboard handlers */\nkeyboard$\n .pipe(\n filter(({ mode }) => mode === \"global\")\n )\n .subscribe(key => {\n switch (key.type) {\n\n /* Go to previous page */\n case \"p\":\n case \",\":\n const prev = getOptionalElement(\"link[rel=prev]\")\n if (typeof prev !== \"undefined\")\n setLocation(prev)\n break\n\n /* Go to next page */\n case \"n\":\n case \".\":\n const next = getOptionalElement(\"link[rel=next]\")\n if (typeof next !== \"undefined\")\n setLocation(next)\n break\n\n /* Expand navigation, see https://bit.ly/3ZjG5io */\n case \"Enter\":\n const active = getActiveElement()\n if (active instanceof HTMLLabelElement)\n active.click()\n }\n })\n\n/* Set up patches */\npatchEllipsis({ viewport$, document$ })\npatchIndeterminate({ document$, tablet$ })\npatchScrollfix({ document$ })\npatchScrolllock({ viewport$, tablet$ })\n\n/* Set up header and main area observable */\nconst header$ = watchHeader(getComponentElement(\"header\"), { viewport$ })\nconst main$ = document$\n .pipe(\n map(() => getComponentElement(\"main\")),\n switchMap(el => watchMain(el, { viewport$, header$ })),\n shareReplay(1)\n )\n\n/* Set up control component observables */\nconst control$ = merge(\n\n /* Consent */\n ...getComponentElements(\"consent\")\n .map(el => mountConsent(el, { target$ })),\n\n /* Dialog */\n ...getComponentElements(\"dialog\")\n .map(el => mountDialog(el, { alert$ })),\n\n /* Header */\n ...getComponentElements(\"header\")\n .map(el => mountHeader(el, { viewport$, header$, main$ })),\n\n /* Color palette */\n ...getComponentElements(\"palette\")\n .map(el => mountPalette(el)),\n\n /* Progress bar */\n ...getComponentElements(\"progress\")\n .map(el => mountProgress(el, { progress$ })),\n\n /* Search */\n ...getComponentElements(\"search\")\n .map(el => mountSearch(el, { index$, keyboard$ })),\n\n /* Repository information */\n ...getComponentElements(\"source\")\n .map(el => mountSource(el))\n)\n\n/* Set up content component observables */\nconst content$ = defer(() => merge(\n\n /* Announcement bar */\n ...getComponentElements(\"announce\")\n .map(el => mountAnnounce(el)),\n\n /* Content */\n ...getComponentElements(\"content\")\n .map(el => mountContent(el, { viewport$, target$, print$ })),\n\n /* Search highlighting */\n ...getComponentElements(\"content\")\n .map(el => feature(\"search.highlight\")\n ? mountSearchHiglight(el, { index$, location$ })\n : EMPTY\n ),\n\n /* Header title */\n ...getComponentElements(\"header-title\")\n .map(el => mountHeaderTitle(el, { viewport$, header$ })),\n\n /* Sidebar */\n ...getComponentElements(\"sidebar\")\n .map(el => el.getAttribute(\"data-md-type\") === \"navigation\"\n ? at(screen$, () => mountSidebar(el, { viewport$, header$, main$ }))\n : at(tablet$, () => mountSidebar(el, { viewport$, header$, main$ }))\n ),\n\n /* Navigation tabs */\n ...getComponentElements(\"tabs\")\n .map(el => mountTabs(el, { viewport$, header$ })),\n\n /* Table of contents */\n ...getComponentElements(\"toc\")\n .map(el => mountTableOfContents(el, {\n viewport$, header$, main$, target$\n })),\n\n /* Back-to-top button */\n ...getComponentElements(\"top\")\n .map(el => mountBackToTop(el, { viewport$, header$, main$, target$ }))\n))\n\n/* Set up component observables */\nconst component$ = document$\n .pipe(\n switchMap(() => content$),\n mergeWith(control$),\n shareReplay(1)\n )\n\n/* Subscribe to all components */\ncomponent$.subscribe()\n\n/* ----------------------------------------------------------------------------\n * Exports\n * ------------------------------------------------------------------------- */\n\nwindow.document$ = document$ /* Document observable */\nwindow.location$ = location$ /* Location subject */\nwindow.target$ = target$ /* Location target observable */\nwindow.keyboard$ = keyboard$ /* Keyboard observable */\nwindow.viewport$ = viewport$ /* Viewport observable */\nwindow.tablet$ = tablet$ /* Media tablet observable */\nwindow.screen$ = screen$ /* Media screen observable */\nwindow.print$ = print$ /* Media print observable */\nwindow.alert$ = alert$ /* Alert subject */\nwindow.progress$ = progress$ /* Progress indicator subject */\nwindow.component$ = component$ /* Component observable */\n", "/******************************************************************************\nCopyright (c) Microsoft Corporation.\n\nPermission to use, copy, modify, and/or distribute this software for any\npurpose with or without fee is hereby granted.\n\nTHE SOFTWARE IS PROVIDED \"AS IS\" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH\nREGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY\nAND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,\nINDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM\nLOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR\nOTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR\nPERFORMANCE OF THIS SOFTWARE.\n***************************************************************************** */\n/* global Reflect, Promise, SuppressedError, Symbol, Iterator */\n\nvar extendStatics = function(d, b) {\n extendStatics = Object.setPrototypeOf ||\n ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };\n return extendStatics(d, b);\n};\n\nexport function __extends(d, b) {\n if (typeof b !== \"function\" && b !== null)\n throw new TypeError(\"Class extends value \" + String(b) + \" is not a constructor or null\");\n extendStatics(d, b);\n function __() { this.constructor = d; }\n d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n}\n\nexport var __assign = function() {\n __assign = Object.assign || function __assign(t) {\n for (var s, i = 1, n = arguments.length; i < n; i++) {\n s = arguments[i];\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];\n }\n return t;\n }\n return __assign.apply(this, arguments);\n}\n\nexport function __rest(s, e) {\n var t = {};\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)\n t[p] = s[p];\n if (s != null && typeof Object.getOwnPropertySymbols === \"function\")\n for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {\n if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))\n t[p[i]] = s[p[i]];\n }\n return t;\n}\n\nexport function __decorate(decorators, target, key, desc) {\n var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;\n if (typeof Reflect === \"object\" && typeof Reflect.decorate === \"function\") r = Reflect.decorate(decorators, target, key, desc);\n else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;\n return c > 3 && r && Object.defineProperty(target, key, r), r;\n}\n\nexport function __param(paramIndex, decorator) {\n return function (target, key) { decorator(target, key, paramIndex); }\n}\n\nexport function __esDecorate(ctor, descriptorIn, decorators, contextIn, initializers, extraInitializers) {\n function accept(f) { if (f !== void 0 && typeof f !== \"function\") throw new TypeError(\"Function expected\"); return f; }\n var kind = contextIn.kind, key = kind === \"getter\" ? \"get\" : kind === \"setter\" ? \"set\" : \"value\";\n var target = !descriptorIn && ctor ? contextIn[\"static\"] ? ctor : ctor.prototype : null;\n var descriptor = descriptorIn || (target ? Object.getOwnPropertyDescriptor(target, contextIn.name) : {});\n var _, done = false;\n for (var i = decorators.length - 1; i >= 0; i--) {\n var context = {};\n for (var p in contextIn) context[p] = p === \"access\" ? {} : contextIn[p];\n for (var p in contextIn.access) context.access[p] = contextIn.access[p];\n context.addInitializer = function (f) { if (done) throw new TypeError(\"Cannot add initializers after decoration has completed\"); extraInitializers.push(accept(f || null)); };\n var result = (0, decorators[i])(kind === \"accessor\" ? { get: descriptor.get, set: descriptor.set } : descriptor[key], context);\n if (kind === \"accessor\") {\n if (result === void 0) continue;\n if (result === null || typeof result !== \"object\") throw new TypeError(\"Object expected\");\n if (_ = accept(result.get)) descriptor.get = _;\n if (_ = accept(result.set)) descriptor.set = _;\n if (_ = accept(result.init)) initializers.unshift(_);\n }\n else if (_ = accept(result)) {\n if (kind === \"field\") initializers.unshift(_);\n else descriptor[key] = _;\n }\n }\n if (target) Object.defineProperty(target, contextIn.name, descriptor);\n done = true;\n};\n\nexport function __runInitializers(thisArg, initializers, value) {\n var useValue = arguments.length > 2;\n for (var i = 0; i < initializers.length; i++) {\n value = useValue ? initializers[i].call(thisArg, value) : initializers[i].call(thisArg);\n }\n return useValue ? value : void 0;\n};\n\nexport function __propKey(x) {\n return typeof x === \"symbol\" ? x : \"\".concat(x);\n};\n\nexport function __setFunctionName(f, name, prefix) {\n if (typeof name === \"symbol\") name = name.description ? \"[\".concat(name.description, \"]\") : \"\";\n return Object.defineProperty(f, \"name\", { configurable: true, value: prefix ? \"\".concat(prefix, \" \", name) : name });\n};\n\nexport function __metadata(metadataKey, metadataValue) {\n if (typeof Reflect === \"object\" && typeof Reflect.metadata === \"function\") return Reflect.metadata(metadataKey, metadataValue);\n}\n\nexport function __awaiter(thisArg, _arguments, P, generator) {\n function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }\n return new (P || (P = Promise))(function (resolve, reject) {\n function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }\n function rejected(value) { try { step(generator[\"throw\"](value)); } catch (e) { reject(e); } }\n function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }\n step((generator = generator.apply(thisArg, _arguments || [])).next());\n });\n}\n\nexport function __generator(thisArg, body) {\n var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g = Object.create((typeof Iterator === \"function\" ? Iterator : Object).prototype);\n return g.next = verb(0), g[\"throw\"] = verb(1), g[\"return\"] = verb(2), typeof Symbol === \"function\" && (g[Symbol.iterator] = function() { return this; }), g;\n function verb(n) { return function (v) { return step([n, v]); }; }\n function step(op) {\n if (f) throw new TypeError(\"Generator is already executing.\");\n while (g && (g = 0, op[0] && (_ = 0)), _) try {\n if (f = 1, y && (t = op[0] & 2 ? y[\"return\"] : op[0] ? y[\"throw\"] || ((t = y[\"return\"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;\n if (y = 0, t) op = [op[0] & 2, t.value];\n switch (op[0]) {\n case 0: case 1: t = op; break;\n case 4: _.label++; return { value: op[1], done: false };\n case 5: _.label++; y = op[1]; op = [0]; continue;\n case 7: op = _.ops.pop(); _.trys.pop(); continue;\n default:\n if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }\n if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }\n if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }\n if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }\n if (t[2]) _.ops.pop();\n _.trys.pop(); continue;\n }\n op = body.call(thisArg, _);\n } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }\n if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };\n }\n}\n\nexport var __createBinding = Object.create ? (function(o, m, k, k2) {\n if (k2 === undefined) k2 = k;\n var desc = Object.getOwnPropertyDescriptor(m, k);\n if (!desc || (\"get\" in desc ? !m.__esModule : desc.writable || desc.configurable)) {\n desc = { enumerable: true, get: function() { return m[k]; } };\n }\n Object.defineProperty(o, k2, desc);\n}) : (function(o, m, k, k2) {\n if (k2 === undefined) k2 = k;\n o[k2] = m[k];\n});\n\nexport function __exportStar(m, o) {\n for (var p in m) if (p !== \"default\" && !Object.prototype.hasOwnProperty.call(o, p)) __createBinding(o, m, p);\n}\n\nexport function __values(o) {\n var s = typeof Symbol === \"function\" && Symbol.iterator, m = s && o[s], i = 0;\n if (m) return m.call(o);\n if (o && typeof o.length === \"number\") return {\n next: function () {\n if (o && i >= o.length) o = void 0;\n return { value: o && o[i++], done: !o };\n }\n };\n throw new TypeError(s ? \"Object is not iterable.\" : \"Symbol.iterator is not defined.\");\n}\n\nexport function __read(o, n) {\n var m = typeof Symbol === \"function\" && o[Symbol.iterator];\n if (!m) return o;\n var i = m.call(o), r, ar = [], e;\n try {\n while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);\n }\n catch (error) { e = { error: error }; }\n finally {\n try {\n if (r && !r.done && (m = i[\"return\"])) m.call(i);\n }\n finally { if (e) throw e.error; }\n }\n return ar;\n}\n\n/** @deprecated */\nexport function __spread() {\n for (var ar = [], i = 0; i < arguments.length; i++)\n ar = ar.concat(__read(arguments[i]));\n return ar;\n}\n\n/** @deprecated */\nexport function __spreadArrays() {\n for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;\n for (var r = Array(s), k = 0, i = 0; i < il; i++)\n for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++)\n r[k] = a[j];\n return r;\n}\n\nexport function __spreadArray(to, from, pack) {\n if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {\n if (ar || !(i in from)) {\n if (!ar) ar = Array.prototype.slice.call(from, 0, i);\n ar[i] = from[i];\n }\n }\n return to.concat(ar || Array.prototype.slice.call(from));\n}\n\nexport function __await(v) {\n return this instanceof __await ? (this.v = v, this) : new __await(v);\n}\n\nexport function __asyncGenerator(thisArg, _arguments, generator) {\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\n var g = generator.apply(thisArg, _arguments || []), i, q = [];\n return i = Object.create((typeof AsyncIterator === \"function\" ? AsyncIterator : Object).prototype), verb(\"next\"), verb(\"throw\"), verb(\"return\", awaitReturn), i[Symbol.asyncIterator] = function () { return this; }, i;\n function awaitReturn(f) { return function (v) { return Promise.resolve(v).then(f, reject); }; }\n function verb(n, f) { if (g[n]) { i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; if (f) i[n] = f(i[n]); } }\n function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }\n function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }\n function fulfill(value) { resume(\"next\", value); }\n function reject(value) { resume(\"throw\", value); }\n function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }\n}\n\nexport function __asyncDelegator(o) {\n var i, p;\n return i = {}, verb(\"next\"), verb(\"throw\", function (e) { throw e; }), verb(\"return\"), i[Symbol.iterator] = function () { return this; }, i;\n function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: false } : f ? f(v) : v; } : f; }\n}\n\nexport function __asyncValues(o) {\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\n var m = o[Symbol.asyncIterator], i;\n return m ? m.call(o) : (o = typeof __values === \"function\" ? __values(o) : o[Symbol.iterator](), i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i);\n function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }\n function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }\n}\n\nexport function __makeTemplateObject(cooked, raw) {\n if (Object.defineProperty) { Object.defineProperty(cooked, \"raw\", { value: raw }); } else { cooked.raw = raw; }\n return cooked;\n};\n\nvar __setModuleDefault = Object.create ? (function(o, v) {\n Object.defineProperty(o, \"default\", { enumerable: true, value: v });\n}) : function(o, v) {\n o[\"default\"] = v;\n};\n\nexport function __importStar(mod) {\n if (mod && mod.__esModule) return mod;\n var result = {};\n if (mod != null) for (var k in mod) if (k !== \"default\" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\n __setModuleDefault(result, mod);\n return result;\n}\n\nexport function __importDefault(mod) {\n return (mod && mod.__esModule) ? mod : { default: mod };\n}\n\nexport function __classPrivateFieldGet(receiver, state, kind, f) {\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a getter\");\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot read private member from an object whose class did not declare it\");\n return kind === \"m\" ? f : kind === \"a\" ? f.call(receiver) : f ? f.value : state.get(receiver);\n}\n\nexport function __classPrivateFieldSet(receiver, state, value, kind, f) {\n if (kind === \"m\") throw new TypeError(\"Private method is not writable\");\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a setter\");\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot write private member to an object whose class did not declare it\");\n return (kind === \"a\" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;\n}\n\nexport function __classPrivateFieldIn(state, receiver) {\n if (receiver === null || (typeof receiver !== \"object\" && typeof receiver !== \"function\")) throw new TypeError(\"Cannot use 'in' operator on non-object\");\n return typeof state === \"function\" ? receiver === state : state.has(receiver);\n}\n\nexport function __addDisposableResource(env, value, async) {\n if (value !== null && value !== void 0) {\n if (typeof value !== \"object\" && typeof value !== \"function\") throw new TypeError(\"Object expected.\");\n var dispose, inner;\n if (async) {\n if (!Symbol.asyncDispose) throw new TypeError(\"Symbol.asyncDispose is not defined.\");\n dispose = value[Symbol.asyncDispose];\n }\n if (dispose === void 0) {\n if (!Symbol.dispose) throw new TypeError(\"Symbol.dispose is not defined.\");\n dispose = value[Symbol.dispose];\n if (async) inner = dispose;\n }\n if (typeof dispose !== \"function\") throw new TypeError(\"Object not disposable.\");\n if (inner) dispose = function() { try { inner.call(this); } catch (e) { return Promise.reject(e); } };\n env.stack.push({ value: value, dispose: dispose, async: async });\n }\n else if (async) {\n env.stack.push({ async: true });\n }\n return value;\n}\n\nvar _SuppressedError = typeof SuppressedError === \"function\" ? SuppressedError : function (error, suppressed, message) {\n var e = new Error(message);\n return e.name = \"SuppressedError\", e.error = error, e.suppressed = suppressed, e;\n};\n\nexport function __disposeResources(env) {\n function fail(e) {\n env.error = env.hasError ? new _SuppressedError(e, env.error, \"An error was suppressed during disposal.\") : e;\n env.hasError = true;\n }\n var r, s = 0;\n function next() {\n while (r = env.stack.pop()) {\n try {\n if (!r.async && s === 1) return s = 0, env.stack.push(r), Promise.resolve().then(next);\n if (r.dispose) {\n var result = r.dispose.call(r.value);\n if (r.async) return s |= 2, Promise.resolve(result).then(next, function(e) { fail(e); return next(); });\n }\n else s |= 1;\n }\n catch (e) {\n fail(e);\n }\n }\n if (s === 1) return env.hasError ? Promise.reject(env.error) : Promise.resolve();\n if (env.hasError) throw env.error;\n }\n return next();\n}\n\nexport default {\n __extends,\n __assign,\n __rest,\n __decorate,\n __param,\n __metadata,\n __awaiter,\n __generator,\n __createBinding,\n __exportStar,\n __values,\n __read,\n __spread,\n __spreadArrays,\n __spreadArray,\n __await,\n __asyncGenerator,\n __asyncDelegator,\n __asyncValues,\n __makeTemplateObject,\n __importStar,\n __importDefault,\n __classPrivateFieldGet,\n __classPrivateFieldSet,\n __classPrivateFieldIn,\n __addDisposableResource,\n __disposeResources,\n};\n", "/**\n * Returns true if the object is a function.\n * @param value The value to check\n */\nexport function isFunction(value: any): value is (...args: any[]) => any {\n return typeof value === 'function';\n}\n", "/**\n * Used to create Error subclasses until the community moves away from ES5.\n *\n * This is because compiling from TypeScript down to ES5 has issues with subclassing Errors\n * as well as other built-in types: https://github.com/Microsoft/TypeScript/issues/12123\n *\n * @param createImpl A factory function to create the actual constructor implementation. The returned\n * function should be a named function that calls `_super` internally.\n */\nexport function createErrorClass(createImpl: (_super: any) => any): T {\n const _super = (instance: any) => {\n Error.call(instance);\n instance.stack = new Error().stack;\n };\n\n const ctorFunc = createImpl(_super);\n ctorFunc.prototype = Object.create(Error.prototype);\n ctorFunc.prototype.constructor = ctorFunc;\n return ctorFunc;\n}\n", "import { createErrorClass } from './createErrorClass';\n\nexport interface UnsubscriptionError extends Error {\n readonly errors: any[];\n}\n\nexport interface UnsubscriptionErrorCtor {\n /**\n * @deprecated Internal implementation detail. Do not construct error instances.\n * Cannot be tagged as internal: https://github.com/ReactiveX/rxjs/issues/6269\n */\n new (errors: any[]): UnsubscriptionError;\n}\n\n/**\n * An error thrown when one or more errors have occurred during the\n * `unsubscribe` of a {@link Subscription}.\n */\nexport const UnsubscriptionError: UnsubscriptionErrorCtor = createErrorClass(\n (_super) =>\n function UnsubscriptionErrorImpl(this: any, errors: (Error | string)[]) {\n _super(this);\n this.message = errors\n ? `${errors.length} errors occurred during unsubscription:\n${errors.map((err, i) => `${i + 1}) ${err.toString()}`).join('\\n ')}`\n : '';\n this.name = 'UnsubscriptionError';\n this.errors = errors;\n }\n);\n", "/**\n * Removes an item from an array, mutating it.\n * @param arr The array to remove the item from\n * @param item The item to remove\n */\nexport function arrRemove(arr: T[] | undefined | null, item: T) {\n if (arr) {\n const index = arr.indexOf(item);\n 0 <= index && arr.splice(index, 1);\n }\n}\n", "import { isFunction } from './util/isFunction';\nimport { UnsubscriptionError } from './util/UnsubscriptionError';\nimport { SubscriptionLike, TeardownLogic, Unsubscribable } from './types';\nimport { arrRemove } from './util/arrRemove';\n\n/**\n * Represents a disposable resource, such as the execution of an Observable. A\n * Subscription has one important method, `unsubscribe`, that takes no argument\n * and just disposes the resource held by the subscription.\n *\n * Additionally, subscriptions may be grouped together through the `add()`\n * method, which will attach a child Subscription to the current Subscription.\n * When a Subscription is unsubscribed, all its children (and its grandchildren)\n * will be unsubscribed as well.\n *\n * @class Subscription\n */\nexport class Subscription implements SubscriptionLike {\n /** @nocollapse */\n public static EMPTY = (() => {\n const empty = new Subscription();\n empty.closed = true;\n return empty;\n })();\n\n /**\n * A flag to indicate whether this Subscription has already been unsubscribed.\n */\n public closed = false;\n\n private _parentage: Subscription[] | Subscription | null = null;\n\n /**\n * The list of registered finalizers to execute upon unsubscription. Adding and removing from this\n * list occurs in the {@link #add} and {@link #remove} methods.\n */\n private _finalizers: Exclude[] | null = null;\n\n /**\n * @param initialTeardown A function executed first as part of the finalization\n * process that is kicked off when {@link #unsubscribe} is called.\n */\n constructor(private initialTeardown?: () => void) {}\n\n /**\n * Disposes the resources held by the subscription. May, for instance, cancel\n * an ongoing Observable execution or cancel any other type of work that\n * started when the Subscription was created.\n * @return {void}\n */\n unsubscribe(): void {\n let errors: any[] | undefined;\n\n if (!this.closed) {\n this.closed = true;\n\n // Remove this from it's parents.\n const { _parentage } = this;\n if (_parentage) {\n this._parentage = null;\n if (Array.isArray(_parentage)) {\n for (const parent of _parentage) {\n parent.remove(this);\n }\n } else {\n _parentage.remove(this);\n }\n }\n\n const { initialTeardown: initialFinalizer } = this;\n if (isFunction(initialFinalizer)) {\n try {\n initialFinalizer();\n } catch (e) {\n errors = e instanceof UnsubscriptionError ? e.errors : [e];\n }\n }\n\n const { _finalizers } = this;\n if (_finalizers) {\n this._finalizers = null;\n for (const finalizer of _finalizers) {\n try {\n execFinalizer(finalizer);\n } catch (err) {\n errors = errors ?? [];\n if (err instanceof UnsubscriptionError) {\n errors = [...errors, ...err.errors];\n } else {\n errors.push(err);\n }\n }\n }\n }\n\n if (errors) {\n throw new UnsubscriptionError(errors);\n }\n }\n }\n\n /**\n * Adds a finalizer to this subscription, so that finalization will be unsubscribed/called\n * when this subscription is unsubscribed. If this subscription is already {@link #closed},\n * because it has already been unsubscribed, then whatever finalizer is passed to it\n * will automatically be executed (unless the finalizer itself is also a closed subscription).\n *\n * Closed Subscriptions cannot be added as finalizers to any subscription. Adding a closed\n * subscription to a any subscription will result in no operation. (A noop).\n *\n * Adding a subscription to itself, or adding `null` or `undefined` will not perform any\n * operation at all. (A noop).\n *\n * `Subscription` instances that are added to this instance will automatically remove themselves\n * if they are unsubscribed. Functions and {@link Unsubscribable} objects that you wish to remove\n * will need to be removed manually with {@link #remove}\n *\n * @param teardown The finalization logic to add to this subscription.\n */\n add(teardown: TeardownLogic): void {\n // Only add the finalizer if it's not undefined\n // and don't add a subscription to itself.\n if (teardown && teardown !== this) {\n if (this.closed) {\n // If this subscription is already closed,\n // execute whatever finalizer is handed to it automatically.\n execFinalizer(teardown);\n } else {\n if (teardown instanceof Subscription) {\n // We don't add closed subscriptions, and we don't add the same subscription\n // twice. Subscription unsubscribe is idempotent.\n if (teardown.closed || teardown._hasParent(this)) {\n return;\n }\n teardown._addParent(this);\n }\n (this._finalizers = this._finalizers ?? []).push(teardown);\n }\n }\n }\n\n /**\n * Checks to see if a this subscription already has a particular parent.\n * This will signal that this subscription has already been added to the parent in question.\n * @param parent the parent to check for\n */\n private _hasParent(parent: Subscription) {\n const { _parentage } = this;\n return _parentage === parent || (Array.isArray(_parentage) && _parentage.includes(parent));\n }\n\n /**\n * Adds a parent to this subscription so it can be removed from the parent if it\n * unsubscribes on it's own.\n *\n * NOTE: THIS ASSUMES THAT {@link _hasParent} HAS ALREADY BEEN CHECKED.\n * @param parent The parent subscription to add\n */\n private _addParent(parent: Subscription) {\n const { _parentage } = this;\n this._parentage = Array.isArray(_parentage) ? (_parentage.push(parent), _parentage) : _parentage ? [_parentage, parent] : parent;\n }\n\n /**\n * Called on a child when it is removed via {@link #remove}.\n * @param parent The parent to remove\n */\n private _removeParent(parent: Subscription) {\n const { _parentage } = this;\n if (_parentage === parent) {\n this._parentage = null;\n } else if (Array.isArray(_parentage)) {\n arrRemove(_parentage, parent);\n }\n }\n\n /**\n * Removes a finalizer from this subscription that was previously added with the {@link #add} method.\n *\n * Note that `Subscription` instances, when unsubscribed, will automatically remove themselves\n * from every other `Subscription` they have been added to. This means that using the `remove` method\n * is not a common thing and should be used thoughtfully.\n *\n * If you add the same finalizer instance of a function or an unsubscribable object to a `Subscription` instance\n * more than once, you will need to call `remove` the same number of times to remove all instances.\n *\n * All finalizer instances are removed to free up memory upon unsubscription.\n *\n * @param teardown The finalizer to remove from this subscription\n */\n remove(teardown: Exclude): void {\n const { _finalizers } = this;\n _finalizers && arrRemove(_finalizers, teardown);\n\n if (teardown instanceof Subscription) {\n teardown._removeParent(this);\n }\n }\n}\n\nexport const EMPTY_SUBSCRIPTION = Subscription.EMPTY;\n\nexport function isSubscription(value: any): value is Subscription {\n return (\n value instanceof Subscription ||\n (value && 'closed' in value && isFunction(value.remove) && isFunction(value.add) && isFunction(value.unsubscribe))\n );\n}\n\nfunction execFinalizer(finalizer: Unsubscribable | (() => void)) {\n if (isFunction(finalizer)) {\n finalizer();\n } else {\n finalizer.unsubscribe();\n }\n}\n", "import { Subscriber } from './Subscriber';\nimport { ObservableNotification } from './types';\n\n/**\n * The {@link GlobalConfig} object for RxJS. It is used to configure things\n * like how to react on unhandled errors.\n */\nexport const config: GlobalConfig = {\n onUnhandledError: null,\n onStoppedNotification: null,\n Promise: undefined,\n useDeprecatedSynchronousErrorHandling: false,\n useDeprecatedNextContext: false,\n};\n\n/**\n * The global configuration object for RxJS, used to configure things\n * like how to react on unhandled errors. Accessible via {@link config}\n * object.\n */\nexport interface GlobalConfig {\n /**\n * A registration point for unhandled errors from RxJS. These are errors that\n * cannot were not handled by consuming code in the usual subscription path. For\n * example, if you have this configured, and you subscribe to an observable without\n * providing an error handler, errors from that subscription will end up here. This\n * will _always_ be called asynchronously on another job in the runtime. This is because\n * we do not want errors thrown in this user-configured handler to interfere with the\n * behavior of the library.\n */\n onUnhandledError: ((err: any) => void) | null;\n\n /**\n * A registration point for notifications that cannot be sent to subscribers because they\n * have completed, errored or have been explicitly unsubscribed. By default, next, complete\n * and error notifications sent to stopped subscribers are noops. However, sometimes callers\n * might want a different behavior. For example, with sources that attempt to report errors\n * to stopped subscribers, a caller can configure RxJS to throw an unhandled error instead.\n * This will _always_ be called asynchronously on another job in the runtime. This is because\n * we do not want errors thrown in this user-configured handler to interfere with the\n * behavior of the library.\n */\n onStoppedNotification: ((notification: ObservableNotification, subscriber: Subscriber) => void) | null;\n\n /**\n * The promise constructor used by default for {@link Observable#toPromise toPromise} and {@link Observable#forEach forEach}\n * methods.\n *\n * @deprecated As of version 8, RxJS will no longer support this sort of injection of a\n * Promise constructor. If you need a Promise implementation other than native promises,\n * please polyfill/patch Promise as you see appropriate. Will be removed in v8.\n */\n Promise?: PromiseConstructorLike;\n\n /**\n * If true, turns on synchronous error rethrowing, which is a deprecated behavior\n * in v6 and higher. This behavior enables bad patterns like wrapping a subscribe\n * call in a try/catch block. It also enables producer interference, a nasty bug\n * where a multicast can be broken for all observers by a downstream consumer with\n * an unhandled error. DO NOT USE THIS FLAG UNLESS IT'S NEEDED TO BUY TIME\n * FOR MIGRATION REASONS.\n *\n * @deprecated As of version 8, RxJS will no longer support synchronous throwing\n * of unhandled errors. All errors will be thrown on a separate call stack to prevent bad\n * behaviors described above. Will be removed in v8.\n */\n useDeprecatedSynchronousErrorHandling: boolean;\n\n /**\n * If true, enables an as-of-yet undocumented feature from v5: The ability to access\n * `unsubscribe()` via `this` context in `next` functions created in observers passed\n * to `subscribe`.\n *\n * This is being removed because the performance was severely problematic, and it could also cause\n * issues when types other than POJOs are passed to subscribe as subscribers, as they will likely have\n * their `this` context overwritten.\n *\n * @deprecated As of version 8, RxJS will no longer support altering the\n * context of next functions provided as part of an observer to Subscribe. Instead,\n * you will have access to a subscription or a signal or token that will allow you to do things like\n * unsubscribe and test closed status. Will be removed in v8.\n */\n useDeprecatedNextContext: boolean;\n}\n", "import type { TimerHandle } from './timerHandle';\ntype SetTimeoutFunction = (handler: () => void, timeout?: number, ...args: any[]) => TimerHandle;\ntype ClearTimeoutFunction = (handle: TimerHandle) => void;\n\ninterface TimeoutProvider {\n setTimeout: SetTimeoutFunction;\n clearTimeout: ClearTimeoutFunction;\n delegate:\n | {\n setTimeout: SetTimeoutFunction;\n clearTimeout: ClearTimeoutFunction;\n }\n | undefined;\n}\n\nexport const timeoutProvider: TimeoutProvider = {\n // When accessing the delegate, use the variable rather than `this` so that\n // the functions can be called without being bound to the provider.\n setTimeout(handler: () => void, timeout?: number, ...args) {\n const { delegate } = timeoutProvider;\n if (delegate?.setTimeout) {\n return delegate.setTimeout(handler, timeout, ...args);\n }\n return setTimeout(handler, timeout, ...args);\n },\n clearTimeout(handle) {\n const { delegate } = timeoutProvider;\n return (delegate?.clearTimeout || clearTimeout)(handle as any);\n },\n delegate: undefined,\n};\n", "import { config } from '../config';\nimport { timeoutProvider } from '../scheduler/timeoutProvider';\n\n/**\n * Handles an error on another job either with the user-configured {@link onUnhandledError},\n * or by throwing it on that new job so it can be picked up by `window.onerror`, `process.on('error')`, etc.\n *\n * This should be called whenever there is an error that is out-of-band with the subscription\n * or when an error hits a terminal boundary of the subscription and no error handler was provided.\n *\n * @param err the error to report\n */\nexport function reportUnhandledError(err: any) {\n timeoutProvider.setTimeout(() => {\n const { onUnhandledError } = config;\n if (onUnhandledError) {\n // Execute the user-configured error handler.\n onUnhandledError(err);\n } else {\n // Throw so it is picked up by the runtime's uncaught error mechanism.\n throw err;\n }\n });\n}\n", "/* tslint:disable:no-empty */\nexport function noop() { }\n", "import { CompleteNotification, NextNotification, ErrorNotification } from './types';\n\n/**\n * A completion object optimized for memory use and created to be the\n * same \"shape\" as other notifications in v8.\n * @internal\n */\nexport const COMPLETE_NOTIFICATION = (() => createNotification('C', undefined, undefined) as CompleteNotification)();\n\n/**\n * Internal use only. Creates an optimized error notification that is the same \"shape\"\n * as other notifications.\n * @internal\n */\nexport function errorNotification(error: any): ErrorNotification {\n return createNotification('E', undefined, error) as any;\n}\n\n/**\n * Internal use only. Creates an optimized next notification that is the same \"shape\"\n * as other notifications.\n * @internal\n */\nexport function nextNotification(value: T) {\n return createNotification('N', value, undefined) as NextNotification;\n}\n\n/**\n * Ensures that all notifications created internally have the same \"shape\" in v8.\n *\n * TODO: This is only exported to support a crazy legacy test in `groupBy`.\n * @internal\n */\nexport function createNotification(kind: 'N' | 'E' | 'C', value: any, error: any) {\n return {\n kind,\n value,\n error,\n };\n}\n", "import { config } from '../config';\n\nlet context: { errorThrown: boolean; error: any } | null = null;\n\n/**\n * Handles dealing with errors for super-gross mode. Creates a context, in which\n * any synchronously thrown errors will be passed to {@link captureError}. Which\n * will record the error such that it will be rethrown after the call back is complete.\n * TODO: Remove in v8\n * @param cb An immediately executed function.\n */\nexport function errorContext(cb: () => void) {\n if (config.useDeprecatedSynchronousErrorHandling) {\n const isRoot = !context;\n if (isRoot) {\n context = { errorThrown: false, error: null };\n }\n cb();\n if (isRoot) {\n const { errorThrown, error } = context!;\n context = null;\n if (errorThrown) {\n throw error;\n }\n }\n } else {\n // This is the general non-deprecated path for everyone that\n // isn't crazy enough to use super-gross mode (useDeprecatedSynchronousErrorHandling)\n cb();\n }\n}\n\n/**\n * Captures errors only in super-gross mode.\n * @param err the error to capture\n */\nexport function captureError(err: any) {\n if (config.useDeprecatedSynchronousErrorHandling && context) {\n context.errorThrown = true;\n context.error = err;\n }\n}\n", "import { isFunction } from './util/isFunction';\nimport { Observer, ObservableNotification } from './types';\nimport { isSubscription, Subscription } from './Subscription';\nimport { config } from './config';\nimport { reportUnhandledError } from './util/reportUnhandledError';\nimport { noop } from './util/noop';\nimport { nextNotification, errorNotification, COMPLETE_NOTIFICATION } from './NotificationFactories';\nimport { timeoutProvider } from './scheduler/timeoutProvider';\nimport { captureError } from './util/errorContext';\n\n/**\n * Implements the {@link Observer} interface and extends the\n * {@link Subscription} class. While the {@link Observer} is the public API for\n * consuming the values of an {@link Observable}, all Observers get converted to\n * a Subscriber, in order to provide Subscription-like capabilities such as\n * `unsubscribe`. Subscriber is a common type in RxJS, and crucial for\n * implementing operators, but it is rarely used as a public API.\n *\n * @class Subscriber\n */\nexport class Subscriber extends Subscription implements Observer {\n /**\n * A static factory for a Subscriber, given a (potentially partial) definition\n * of an Observer.\n * @param next The `next` callback of an Observer.\n * @param error The `error` callback of an\n * Observer.\n * @param complete The `complete` callback of an\n * Observer.\n * @return A Subscriber wrapping the (partially defined)\n * Observer represented by the given arguments.\n * @nocollapse\n * @deprecated Do not use. Will be removed in v8. There is no replacement for this\n * method, and there is no reason to be creating instances of `Subscriber` directly.\n * If you have a specific use case, please file an issue.\n */\n static create(next?: (x?: T) => void, error?: (e?: any) => void, complete?: () => void): Subscriber {\n return new SafeSubscriber(next, error, complete);\n }\n\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n protected isStopped: boolean = false;\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n protected destination: Subscriber | Observer; // this `any` is the escape hatch to erase extra type param (e.g. R)\n\n /**\n * @deprecated Internal implementation detail, do not use directly. Will be made internal in v8.\n * There is no reason to directly create an instance of Subscriber. This type is exported for typings reasons.\n */\n constructor(destination?: Subscriber | Observer) {\n super();\n if (destination) {\n this.destination = destination;\n // Automatically chain subscriptions together here.\n // if destination is a Subscription, then it is a Subscriber.\n if (isSubscription(destination)) {\n destination.add(this);\n }\n } else {\n this.destination = EMPTY_OBSERVER;\n }\n }\n\n /**\n * The {@link Observer} callback to receive notifications of type `next` from\n * the Observable, with a value. The Observable may call this method 0 or more\n * times.\n * @param {T} [value] The `next` value.\n * @return {void}\n */\n next(value?: T): void {\n if (this.isStopped) {\n handleStoppedNotification(nextNotification(value), this);\n } else {\n this._next(value!);\n }\n }\n\n /**\n * The {@link Observer} callback to receive notifications of type `error` from\n * the Observable, with an attached `Error`. Notifies the Observer that\n * the Observable has experienced an error condition.\n * @param {any} [err] The `error` exception.\n * @return {void}\n */\n error(err?: any): void {\n if (this.isStopped) {\n handleStoppedNotification(errorNotification(err), this);\n } else {\n this.isStopped = true;\n this._error(err);\n }\n }\n\n /**\n * The {@link Observer} callback to receive a valueless notification of type\n * `complete` from the Observable. Notifies the Observer that the Observable\n * has finished sending push-based notifications.\n * @return {void}\n */\n complete(): void {\n if (this.isStopped) {\n handleStoppedNotification(COMPLETE_NOTIFICATION, this);\n } else {\n this.isStopped = true;\n this._complete();\n }\n }\n\n unsubscribe(): void {\n if (!this.closed) {\n this.isStopped = true;\n super.unsubscribe();\n this.destination = null!;\n }\n }\n\n protected _next(value: T): void {\n this.destination.next(value);\n }\n\n protected _error(err: any): void {\n try {\n this.destination.error(err);\n } finally {\n this.unsubscribe();\n }\n }\n\n protected _complete(): void {\n try {\n this.destination.complete();\n } finally {\n this.unsubscribe();\n }\n }\n}\n\n/**\n * This bind is captured here because we want to be able to have\n * compatibility with monoid libraries that tend to use a method named\n * `bind`. In particular, a library called Monio requires this.\n */\nconst _bind = Function.prototype.bind;\n\nfunction bind any>(fn: Fn, thisArg: any): Fn {\n return _bind.call(fn, thisArg);\n}\n\n/**\n * Internal optimization only, DO NOT EXPOSE.\n * @internal\n */\nclass ConsumerObserver implements Observer {\n constructor(private partialObserver: Partial>) {}\n\n next(value: T): void {\n const { partialObserver } = this;\n if (partialObserver.next) {\n try {\n partialObserver.next(value);\n } catch (error) {\n handleUnhandledError(error);\n }\n }\n }\n\n error(err: any): void {\n const { partialObserver } = this;\n if (partialObserver.error) {\n try {\n partialObserver.error(err);\n } catch (error) {\n handleUnhandledError(error);\n }\n } else {\n handleUnhandledError(err);\n }\n }\n\n complete(): void {\n const { partialObserver } = this;\n if (partialObserver.complete) {\n try {\n partialObserver.complete();\n } catch (error) {\n handleUnhandledError(error);\n }\n }\n }\n}\n\nexport class SafeSubscriber extends Subscriber {\n constructor(\n observerOrNext?: Partial> | ((value: T) => void) | null,\n error?: ((e?: any) => void) | null,\n complete?: (() => void) | null\n ) {\n super();\n\n let partialObserver: Partial>;\n if (isFunction(observerOrNext) || !observerOrNext) {\n // The first argument is a function, not an observer. The next\n // two arguments *could* be observers, or they could be empty.\n partialObserver = {\n next: (observerOrNext ?? undefined) as (((value: T) => void) | undefined),\n error: error ?? undefined,\n complete: complete ?? undefined,\n };\n } else {\n // The first argument is a partial observer.\n let context: any;\n if (this && config.useDeprecatedNextContext) {\n // This is a deprecated path that made `this.unsubscribe()` available in\n // next handler functions passed to subscribe. This only exists behind a flag\n // now, as it is *very* slow.\n context = Object.create(observerOrNext);\n context.unsubscribe = () => this.unsubscribe();\n partialObserver = {\n next: observerOrNext.next && bind(observerOrNext.next, context),\n error: observerOrNext.error && bind(observerOrNext.error, context),\n complete: observerOrNext.complete && bind(observerOrNext.complete, context),\n };\n } else {\n // The \"normal\" path. Just use the partial observer directly.\n partialObserver = observerOrNext;\n }\n }\n\n // Wrap the partial observer to ensure it's a full observer, and\n // make sure proper error handling is accounted for.\n this.destination = new ConsumerObserver(partialObserver);\n }\n}\n\nfunction handleUnhandledError(error: any) {\n if (config.useDeprecatedSynchronousErrorHandling) {\n captureError(error);\n } else {\n // Ideal path, we report this as an unhandled error,\n // which is thrown on a new call stack.\n reportUnhandledError(error);\n }\n}\n\n/**\n * An error handler used when no error handler was supplied\n * to the SafeSubscriber -- meaning no error handler was supplied\n * do the `subscribe` call on our observable.\n * @param err The error to handle\n */\nfunction defaultErrorHandler(err: any) {\n throw err;\n}\n\n/**\n * A handler for notifications that cannot be sent to a stopped subscriber.\n * @param notification The notification being sent\n * @param subscriber The stopped subscriber\n */\nfunction handleStoppedNotification(notification: ObservableNotification, subscriber: Subscriber) {\n const { onStoppedNotification } = config;\n onStoppedNotification && timeoutProvider.setTimeout(() => onStoppedNotification(notification, subscriber));\n}\n\n/**\n * The observer used as a stub for subscriptions where the user did not\n * pass any arguments to `subscribe`. Comes with the default error handling\n * behavior.\n */\nexport const EMPTY_OBSERVER: Readonly> & { closed: true } = {\n closed: true,\n next: noop,\n error: defaultErrorHandler,\n complete: noop,\n};\n", "/**\n * Symbol.observable or a string \"@@observable\". Used for interop\n *\n * @deprecated We will no longer be exporting this symbol in upcoming versions of RxJS.\n * Instead polyfill and use Symbol.observable directly *or* use https://www.npmjs.com/package/symbol-observable\n */\nexport const observable: string | symbol = (() => (typeof Symbol === 'function' && Symbol.observable) || '@@observable')();\n", "/**\n * This function takes one parameter and just returns it. Simply put,\n * this is like `(x: T): T => x`.\n *\n * ## Examples\n *\n * This is useful in some cases when using things like `mergeMap`\n *\n * ```ts\n * import { interval, take, map, range, mergeMap, identity } from 'rxjs';\n *\n * const source$ = interval(1000).pipe(take(5));\n *\n * const result$ = source$.pipe(\n * map(i => range(i)),\n * mergeMap(identity) // same as mergeMap(x => x)\n * );\n *\n * result$.subscribe({\n * next: console.log\n * });\n * ```\n *\n * Or when you want to selectively apply an operator\n *\n * ```ts\n * import { interval, take, identity } from 'rxjs';\n *\n * const shouldLimit = () => Math.random() < 0.5;\n *\n * const source$ = interval(1000);\n *\n * const result$ = source$.pipe(shouldLimit() ? take(5) : identity);\n *\n * result$.subscribe({\n * next: console.log\n * });\n * ```\n *\n * @param x Any value that is returned by this function\n * @returns The value passed as the first parameter to this function\n */\nexport function identity(x: T): T {\n return x;\n}\n", "import { identity } from './identity';\nimport { UnaryFunction } from '../types';\n\nexport function pipe(): typeof identity;\nexport function pipe(fn1: UnaryFunction): UnaryFunction;\nexport function pipe(fn1: UnaryFunction, fn2: UnaryFunction): UnaryFunction;\nexport function pipe(fn1: UnaryFunction, fn2: UnaryFunction, fn3: UnaryFunction): UnaryFunction;\nexport function pipe(\n fn1: UnaryFunction,\n fn2: UnaryFunction,\n fn3: UnaryFunction,\n fn4: UnaryFunction\n): UnaryFunction;\nexport function pipe(\n fn1: UnaryFunction,\n fn2: UnaryFunction,\n fn3: UnaryFunction,\n fn4: UnaryFunction,\n fn5: UnaryFunction\n): UnaryFunction;\nexport function pipe(\n fn1: UnaryFunction,\n fn2: UnaryFunction,\n fn3: UnaryFunction,\n fn4: UnaryFunction,\n fn5: UnaryFunction,\n fn6: UnaryFunction\n): UnaryFunction;\nexport function pipe(\n fn1: UnaryFunction,\n fn2: UnaryFunction,\n fn3: UnaryFunction,\n fn4: UnaryFunction,\n fn5: UnaryFunction,\n fn6: UnaryFunction,\n fn7: UnaryFunction\n): UnaryFunction;\nexport function pipe(\n fn1: UnaryFunction,\n fn2: UnaryFunction,\n fn3: UnaryFunction,\n fn4: UnaryFunction,\n fn5: UnaryFunction,\n fn6: UnaryFunction,\n fn7: UnaryFunction,\n fn8: UnaryFunction\n): UnaryFunction;\nexport function pipe(\n fn1: UnaryFunction,\n fn2: UnaryFunction,\n fn3: UnaryFunction,\n fn4: UnaryFunction,\n fn5: UnaryFunction,\n fn6: UnaryFunction,\n fn7: UnaryFunction,\n fn8: UnaryFunction,\n fn9: UnaryFunction\n): UnaryFunction;\nexport function pipe(\n fn1: UnaryFunction,\n fn2: UnaryFunction,\n fn3: UnaryFunction,\n fn4: UnaryFunction,\n fn5: UnaryFunction,\n fn6: UnaryFunction,\n fn7: UnaryFunction,\n fn8: UnaryFunction,\n fn9: UnaryFunction,\n ...fns: UnaryFunction[]\n): UnaryFunction;\n\n/**\n * pipe() can be called on one or more functions, each of which can take one argument (\"UnaryFunction\")\n * and uses it to return a value.\n * It returns a function that takes one argument, passes it to the first UnaryFunction, and then\n * passes the result to the next one, passes that result to the next one, and so on. \n */\nexport function pipe(...fns: Array>): UnaryFunction {\n return pipeFromArray(fns);\n}\n\n/** @internal */\nexport function pipeFromArray(fns: Array>): UnaryFunction {\n if (fns.length === 0) {\n return identity as UnaryFunction;\n }\n\n if (fns.length === 1) {\n return fns[0];\n }\n\n return function piped(input: T): R {\n return fns.reduce((prev: any, fn: UnaryFunction) => fn(prev), input as any);\n };\n}\n", "import { Operator } from './Operator';\nimport { SafeSubscriber, Subscriber } from './Subscriber';\nimport { isSubscription, Subscription } from './Subscription';\nimport { TeardownLogic, OperatorFunction, Subscribable, Observer } from './types';\nimport { observable as Symbol_observable } from './symbol/observable';\nimport { pipeFromArray } from './util/pipe';\nimport { config } from './config';\nimport { isFunction } from './util/isFunction';\nimport { errorContext } from './util/errorContext';\n\n/**\n * A representation of any set of values over any amount of time. This is the most basic building block\n * of RxJS.\n *\n * @class Observable\n */\nexport class Observable implements Subscribable {\n /**\n * @deprecated Internal implementation detail, do not use directly. Will be made internal in v8.\n */\n source: Observable | undefined;\n\n /**\n * @deprecated Internal implementation detail, do not use directly. Will be made internal in v8.\n */\n operator: Operator | undefined;\n\n /**\n * @constructor\n * @param {Function} subscribe the function that is called when the Observable is\n * initially subscribed to. This function is given a Subscriber, to which new values\n * can be `next`ed, or an `error` method can be called to raise an error, or\n * `complete` can be called to notify of a successful completion.\n */\n constructor(subscribe?: (this: Observable, subscriber: Subscriber) => TeardownLogic) {\n if (subscribe) {\n this._subscribe = subscribe;\n }\n }\n\n // HACK: Since TypeScript inherits static properties too, we have to\n // fight against TypeScript here so Subject can have a different static create signature\n /**\n * Creates a new Observable by calling the Observable constructor\n * @owner Observable\n * @method create\n * @param {Function} subscribe? the subscriber function to be passed to the Observable constructor\n * @return {Observable} a new observable\n * @nocollapse\n * @deprecated Use `new Observable()` instead. Will be removed in v8.\n */\n static create: (...args: any[]) => any = (subscribe?: (subscriber: Subscriber) => TeardownLogic) => {\n return new Observable(subscribe);\n };\n\n /**\n * Creates a new Observable, with this Observable instance as the source, and the passed\n * operator defined as the new observable's operator.\n * @method lift\n * @param operator the operator defining the operation to take on the observable\n * @return a new observable with the Operator applied\n * @deprecated Internal implementation detail, do not use directly. Will be made internal in v8.\n * If you have implemented an operator using `lift`, it is recommended that you create an\n * operator by simply returning `new Observable()` directly. See \"Creating new operators from\n * scratch\" section here: https://rxjs.dev/guide/operators\n */\n lift(operator?: Operator): Observable {\n const observable = new Observable();\n observable.source = this;\n observable.operator = operator;\n return observable;\n }\n\n subscribe(observerOrNext?: Partial> | ((value: T) => void)): Subscription;\n /** @deprecated Instead of passing separate callback arguments, use an observer argument. Signatures taking separate callback arguments will be removed in v8. Details: https://rxjs.dev/deprecations/subscribe-arguments */\n subscribe(next?: ((value: T) => void) | null, error?: ((error: any) => void) | null, complete?: (() => void) | null): Subscription;\n /**\n * Invokes an execution of an Observable and registers Observer handlers for notifications it will emit.\n *\n * Use it when you have all these Observables, but still nothing is happening.\n *\n * `subscribe` is not a regular operator, but a method that calls Observable's internal `subscribe` function. It\n * might be for example a function that you passed to Observable's constructor, but most of the time it is\n * a library implementation, which defines what will be emitted by an Observable, and when it be will emitted. This means\n * that calling `subscribe` is actually the moment when Observable starts its work, not when it is created, as it is often\n * the thought.\n *\n * Apart from starting the execution of an Observable, this method allows you to listen for values\n * that an Observable emits, as well as for when it completes or errors. You can achieve this in two\n * of the following ways.\n *\n * The first way is creating an object that implements {@link Observer} interface. It should have methods\n * defined by that interface, but note that it should be just a regular JavaScript object, which you can create\n * yourself in any way you want (ES6 class, classic function constructor, object literal etc.). In particular, do\n * not attempt to use any RxJS implementation details to create Observers - you don't need them. Remember also\n * that your object does not have to implement all methods. If you find yourself creating a method that doesn't\n * do anything, you can simply omit it. Note however, if the `error` method is not provided and an error happens,\n * it will be thrown asynchronously. Errors thrown asynchronously cannot be caught using `try`/`catch`. Instead,\n * use the {@link onUnhandledError} configuration option or use a runtime handler (like `window.onerror` or\n * `process.on('error)`) to be notified of unhandled errors. Because of this, it's recommended that you provide\n * an `error` method to avoid missing thrown errors.\n *\n * The second way is to give up on Observer object altogether and simply provide callback functions in place of its methods.\n * This means you can provide three functions as arguments to `subscribe`, where the first function is equivalent\n * of a `next` method, the second of an `error` method and the third of a `complete` method. Just as in case of an Observer,\n * if you do not need to listen for something, you can omit a function by passing `undefined` or `null`,\n * since `subscribe` recognizes these functions by where they were placed in function call. When it comes\n * to the `error` function, as with an Observer, if not provided, errors emitted by an Observable will be thrown asynchronously.\n *\n * You can, however, subscribe with no parameters at all. This may be the case where you're not interested in terminal events\n * and you also handled emissions internally by using operators (e.g. using `tap`).\n *\n * Whichever style of calling `subscribe` you use, in both cases it returns a Subscription object.\n * This object allows you to call `unsubscribe` on it, which in turn will stop the work that an Observable does and will clean\n * up all resources that an Observable used. Note that cancelling a subscription will not call `complete` callback\n * provided to `subscribe` function, which is reserved for a regular completion signal that comes from an Observable.\n *\n * Remember that callbacks provided to `subscribe` are not guaranteed to be called asynchronously.\n * It is an Observable itself that decides when these functions will be called. For example {@link of}\n * by default emits all its values synchronously. Always check documentation for how given Observable\n * will behave when subscribed and if its default behavior can be modified with a `scheduler`.\n *\n * #### Examples\n *\n * Subscribe with an {@link guide/observer Observer}\n *\n * ```ts\n * import { of } from 'rxjs';\n *\n * const sumObserver = {\n * sum: 0,\n * next(value) {\n * console.log('Adding: ' + value);\n * this.sum = this.sum + value;\n * },\n * error() {\n * // We actually could just remove this method,\n * // since we do not really care about errors right now.\n * },\n * complete() {\n * console.log('Sum equals: ' + this.sum);\n * }\n * };\n *\n * of(1, 2, 3) // Synchronously emits 1, 2, 3 and then completes.\n * .subscribe(sumObserver);\n *\n * // Logs:\n * // 'Adding: 1'\n * // 'Adding: 2'\n * // 'Adding: 3'\n * // 'Sum equals: 6'\n * ```\n *\n * Subscribe with functions ({@link deprecations/subscribe-arguments deprecated})\n *\n * ```ts\n * import { of } from 'rxjs'\n *\n * let sum = 0;\n *\n * of(1, 2, 3).subscribe(\n * value => {\n * console.log('Adding: ' + value);\n * sum = sum + value;\n * },\n * undefined,\n * () => console.log('Sum equals: ' + sum)\n * );\n *\n * // Logs:\n * // 'Adding: 1'\n * // 'Adding: 2'\n * // 'Adding: 3'\n * // 'Sum equals: 6'\n * ```\n *\n * Cancel a subscription\n *\n * ```ts\n * import { interval } from 'rxjs';\n *\n * const subscription = interval(1000).subscribe({\n * next(num) {\n * console.log(num)\n * },\n * complete() {\n * // Will not be called, even when cancelling subscription.\n * console.log('completed!');\n * }\n * });\n *\n * setTimeout(() => {\n * subscription.unsubscribe();\n * console.log('unsubscribed!');\n * }, 2500);\n *\n * // Logs:\n * // 0 after 1s\n * // 1 after 2s\n * // 'unsubscribed!' after 2.5s\n * ```\n *\n * @param {Observer|Function} observerOrNext (optional) Either an observer with methods to be called,\n * or the first of three possible handlers, which is the handler for each value emitted from the subscribed\n * Observable.\n * @param {Function} error (optional) A handler for a terminal event resulting from an error. If no error handler is provided,\n * the error will be thrown asynchronously as unhandled.\n * @param {Function} complete (optional) A handler for a terminal event resulting from successful completion.\n * @return {Subscription} a subscription reference to the registered handlers\n * @method subscribe\n */\n subscribe(\n observerOrNext?: Partial> | ((value: T) => void) | null,\n error?: ((error: any) => void) | null,\n complete?: (() => void) | null\n ): Subscription {\n const subscriber = isSubscriber(observerOrNext) ? observerOrNext : new SafeSubscriber(observerOrNext, error, complete);\n\n errorContext(() => {\n const { operator, source } = this;\n subscriber.add(\n operator\n ? // We're dealing with a subscription in the\n // operator chain to one of our lifted operators.\n operator.call(subscriber, source)\n : source\n ? // If `source` has a value, but `operator` does not, something that\n // had intimate knowledge of our API, like our `Subject`, must have\n // set it. We're going to just call `_subscribe` directly.\n this._subscribe(subscriber)\n : // In all other cases, we're likely wrapping a user-provided initializer\n // function, so we need to catch errors and handle them appropriately.\n this._trySubscribe(subscriber)\n );\n });\n\n return subscriber;\n }\n\n /** @internal */\n protected _trySubscribe(sink: Subscriber): TeardownLogic {\n try {\n return this._subscribe(sink);\n } catch (err) {\n // We don't need to return anything in this case,\n // because it's just going to try to `add()` to a subscription\n // above.\n sink.error(err);\n }\n }\n\n /**\n * Used as a NON-CANCELLABLE means of subscribing to an observable, for use with\n * APIs that expect promises, like `async/await`. You cannot unsubscribe from this.\n *\n * **WARNING**: Only use this with observables you *know* will complete. If the source\n * observable does not complete, you will end up with a promise that is hung up, and\n * potentially all of the state of an async function hanging out in memory. To avoid\n * this situation, look into adding something like {@link timeout}, {@link take},\n * {@link takeWhile}, or {@link takeUntil} amongst others.\n *\n * #### Example\n *\n * ```ts\n * import { interval, take } from 'rxjs';\n *\n * const source$ = interval(1000).pipe(take(4));\n *\n * async function getTotal() {\n * let total = 0;\n *\n * await source$.forEach(value => {\n * total += value;\n * console.log('observable -> ' + value);\n * });\n *\n * return total;\n * }\n *\n * getTotal().then(\n * total => console.log('Total: ' + total)\n * );\n *\n * // Expected:\n * // 'observable -> 0'\n * // 'observable -> 1'\n * // 'observable -> 2'\n * // 'observable -> 3'\n * // 'Total: 6'\n * ```\n *\n * @param next a handler for each value emitted by the observable\n * @return a promise that either resolves on observable completion or\n * rejects with the handled error\n */\n forEach(next: (value: T) => void): Promise;\n\n /**\n * @param next a handler for each value emitted by the observable\n * @param promiseCtor a constructor function used to instantiate the Promise\n * @return a promise that either resolves on observable completion or\n * rejects with the handled error\n * @deprecated Passing a Promise constructor will no longer be available\n * in upcoming versions of RxJS. This is because it adds weight to the library, for very\n * little benefit. If you need this functionality, it is recommended that you either\n * polyfill Promise, or you create an adapter to convert the returned native promise\n * to whatever promise implementation you wanted. Will be removed in v8.\n */\n forEach(next: (value: T) => void, promiseCtor: PromiseConstructorLike): Promise;\n\n forEach(next: (value: T) => void, promiseCtor?: PromiseConstructorLike): Promise {\n promiseCtor = getPromiseCtor(promiseCtor);\n\n return new promiseCtor((resolve, reject) => {\n const subscriber = new SafeSubscriber({\n next: (value) => {\n try {\n next(value);\n } catch (err) {\n reject(err);\n subscriber.unsubscribe();\n }\n },\n error: reject,\n complete: resolve,\n });\n this.subscribe(subscriber);\n }) as Promise;\n }\n\n /** @internal */\n protected _subscribe(subscriber: Subscriber): TeardownLogic {\n return this.source?.subscribe(subscriber);\n }\n\n /**\n * An interop point defined by the es7-observable spec https://github.com/zenparsing/es-observable\n * @method Symbol.observable\n * @return {Observable} this instance of the observable\n */\n [Symbol_observable]() {\n return this;\n }\n\n /* tslint:disable:max-line-length */\n pipe(): Observable;\n pipe(op1: OperatorFunction): Observable;\n pipe(op1: OperatorFunction, op2: OperatorFunction): Observable;\n pipe(op1: OperatorFunction, op2: OperatorFunction, op3: OperatorFunction): Observable;\n pipe(\n op1: OperatorFunction,\n op2: OperatorFunction,\n op3: OperatorFunction,\n op4: OperatorFunction\n ): Observable;\n pipe(\n op1: OperatorFunction,\n op2: OperatorFunction,\n op3: OperatorFunction,\n op4: OperatorFunction,\n op5: OperatorFunction\n ): Observable;\n pipe(\n op1: OperatorFunction,\n op2: OperatorFunction,\n op3: OperatorFunction,\n op4: OperatorFunction,\n op5: OperatorFunction,\n op6: OperatorFunction\n ): Observable;\n pipe(\n op1: OperatorFunction,\n op2: OperatorFunction,\n op3: OperatorFunction,\n op4: OperatorFunction,\n op5: OperatorFunction,\n op6: OperatorFunction,\n op7: OperatorFunction\n ): Observable;\n pipe(\n op1: OperatorFunction,\n op2: OperatorFunction,\n op3: OperatorFunction,\n op4: OperatorFunction,\n op5: OperatorFunction,\n op6: OperatorFunction,\n op7: OperatorFunction,\n op8: OperatorFunction\n ): Observable;\n pipe(\n op1: OperatorFunction,\n op2: OperatorFunction,\n op3: OperatorFunction,\n op4: OperatorFunction,\n op5: OperatorFunction,\n op6: OperatorFunction,\n op7: OperatorFunction,\n op8: OperatorFunction,\n op9: OperatorFunction\n ): Observable;\n pipe(\n op1: OperatorFunction,\n op2: OperatorFunction,\n op3: OperatorFunction,\n op4: OperatorFunction,\n op5: OperatorFunction,\n op6: OperatorFunction,\n op7: OperatorFunction,\n op8: OperatorFunction,\n op9: OperatorFunction,\n ...operations: OperatorFunction[]\n ): Observable;\n /* tslint:enable:max-line-length */\n\n /**\n * Used to stitch together functional operators into a chain.\n * @method pipe\n * @return {Observable} the Observable result of all of the operators having\n * been called in the order they were passed in.\n *\n * ## Example\n *\n * ```ts\n * import { interval, filter, map, scan } from 'rxjs';\n *\n * interval(1000)\n * .pipe(\n * filter(x => x % 2 === 0),\n * map(x => x + x),\n * scan((acc, x) => acc + x)\n * )\n * .subscribe(x => console.log(x));\n * ```\n */\n pipe(...operations: OperatorFunction[]): Observable {\n return pipeFromArray(operations)(this);\n }\n\n /* tslint:disable:max-line-length */\n /** @deprecated Replaced with {@link firstValueFrom} and {@link lastValueFrom}. Will be removed in v8. Details: https://rxjs.dev/deprecations/to-promise */\n toPromise(): Promise;\n /** @deprecated Replaced with {@link firstValueFrom} and {@link lastValueFrom}. Will be removed in v8. Details: https://rxjs.dev/deprecations/to-promise */\n toPromise(PromiseCtor: typeof Promise): Promise;\n /** @deprecated Replaced with {@link firstValueFrom} and {@link lastValueFrom}. Will be removed in v8. Details: https://rxjs.dev/deprecations/to-promise */\n toPromise(PromiseCtor: PromiseConstructorLike): Promise;\n /* tslint:enable:max-line-length */\n\n /**\n * Subscribe to this Observable and get a Promise resolving on\n * `complete` with the last emission (if any).\n *\n * **WARNING**: Only use this with observables you *know* will complete. If the source\n * observable does not complete, you will end up with a promise that is hung up, and\n * potentially all of the state of an async function hanging out in memory. To avoid\n * this situation, look into adding something like {@link timeout}, {@link take},\n * {@link takeWhile}, or {@link takeUntil} amongst others.\n *\n * @method toPromise\n * @param [promiseCtor] a constructor function used to instantiate\n * the Promise\n * @return A Promise that resolves with the last value emit, or\n * rejects on an error. If there were no emissions, Promise\n * resolves with undefined.\n * @deprecated Replaced with {@link firstValueFrom} and {@link lastValueFrom}. Will be removed in v8. Details: https://rxjs.dev/deprecations/to-promise\n */\n toPromise(promiseCtor?: PromiseConstructorLike): Promise {\n promiseCtor = getPromiseCtor(promiseCtor);\n\n return new promiseCtor((resolve, reject) => {\n let value: T | undefined;\n this.subscribe(\n (x: T) => (value = x),\n (err: any) => reject(err),\n () => resolve(value)\n );\n }) as Promise;\n }\n}\n\n/**\n * Decides between a passed promise constructor from consuming code,\n * A default configured promise constructor, and the native promise\n * constructor and returns it. If nothing can be found, it will throw\n * an error.\n * @param promiseCtor The optional promise constructor to passed by consuming code\n */\nfunction getPromiseCtor(promiseCtor: PromiseConstructorLike | undefined) {\n return promiseCtor ?? config.Promise ?? Promise;\n}\n\nfunction isObserver(value: any): value is Observer {\n return value && isFunction(value.next) && isFunction(value.error) && isFunction(value.complete);\n}\n\nfunction isSubscriber(value: any): value is Subscriber {\n return (value && value instanceof Subscriber) || (isObserver(value) && isSubscription(value));\n}\n", "import { Observable } from '../Observable';\nimport { Subscriber } from '../Subscriber';\nimport { OperatorFunction } from '../types';\nimport { isFunction } from './isFunction';\n\n/**\n * Used to determine if an object is an Observable with a lift function.\n */\nexport function hasLift(source: any): source is { lift: InstanceType['lift'] } {\n return isFunction(source?.lift);\n}\n\n/**\n * Creates an `OperatorFunction`. Used to define operators throughout the library in a concise way.\n * @param init The logic to connect the liftedSource to the subscriber at the moment of subscription.\n */\nexport function operate(\n init: (liftedSource: Observable, subscriber: Subscriber) => (() => void) | void\n): OperatorFunction {\n return (source: Observable) => {\n if (hasLift(source)) {\n return source.lift(function (this: Subscriber, liftedSource: Observable) {\n try {\n return init(liftedSource, this);\n } catch (err) {\n this.error(err);\n }\n });\n }\n throw new TypeError('Unable to lift unknown Observable type');\n };\n}\n", "import { Subscriber } from '../Subscriber';\n\n/**\n * Creates an instance of an `OperatorSubscriber`.\n * @param destination The downstream subscriber.\n * @param onNext Handles next values, only called if this subscriber is not stopped or closed. Any\n * error that occurs in this function is caught and sent to the `error` method of this subscriber.\n * @param onError Handles errors from the subscription, any errors that occur in this handler are caught\n * and send to the `destination` error handler.\n * @param onComplete Handles completion notification from the subscription. Any errors that occur in\n * this handler are sent to the `destination` error handler.\n * @param onFinalize Additional teardown logic here. This will only be called on teardown if the\n * subscriber itself is not already closed. This is called after all other teardown logic is executed.\n */\nexport function createOperatorSubscriber(\n destination: Subscriber,\n onNext?: (value: T) => void,\n onComplete?: () => void,\n onError?: (err: any) => void,\n onFinalize?: () => void\n): Subscriber {\n return new OperatorSubscriber(destination, onNext, onComplete, onError, onFinalize);\n}\n\n/**\n * A generic helper for allowing operators to be created with a Subscriber and\n * use closures to capture necessary state from the operator function itself.\n */\nexport class OperatorSubscriber extends Subscriber {\n /**\n * Creates an instance of an `OperatorSubscriber`.\n * @param destination The downstream subscriber.\n * @param onNext Handles next values, only called if this subscriber is not stopped or closed. Any\n * error that occurs in this function is caught and sent to the `error` method of this subscriber.\n * @param onError Handles errors from the subscription, any errors that occur in this handler are caught\n * and send to the `destination` error handler.\n * @param onComplete Handles completion notification from the subscription. Any errors that occur in\n * this handler are sent to the `destination` error handler.\n * @param onFinalize Additional finalization logic here. This will only be called on finalization if the\n * subscriber itself is not already closed. This is called after all other finalization logic is executed.\n * @param shouldUnsubscribe An optional check to see if an unsubscribe call should truly unsubscribe.\n * NOTE: This currently **ONLY** exists to support the strange behavior of {@link groupBy}, where unsubscription\n * to the resulting observable does not actually disconnect from the source if there are active subscriptions\n * to any grouped observable. (DO NOT EXPOSE OR USE EXTERNALLY!!!)\n */\n constructor(\n destination: Subscriber,\n onNext?: (value: T) => void,\n onComplete?: () => void,\n onError?: (err: any) => void,\n private onFinalize?: () => void,\n private shouldUnsubscribe?: () => boolean\n ) {\n // It's important - for performance reasons - that all of this class's\n // members are initialized and that they are always initialized in the same\n // order. This will ensure that all OperatorSubscriber instances have the\n // same hidden class in V8. This, in turn, will help keep the number of\n // hidden classes involved in property accesses within the base class as\n // low as possible. If the number of hidden classes involved exceeds four,\n // the property accesses will become megamorphic and performance penalties\n // will be incurred - i.e. inline caches won't be used.\n //\n // The reasons for ensuring all instances have the same hidden class are\n // further discussed in this blog post from Benedikt Meurer:\n // https://benediktmeurer.de/2018/03/23/impact-of-polymorphism-on-component-based-frameworks-like-react/\n super(destination);\n this._next = onNext\n ? function (this: OperatorSubscriber, value: T) {\n try {\n onNext(value);\n } catch (err) {\n destination.error(err);\n }\n }\n : super._next;\n this._error = onError\n ? function (this: OperatorSubscriber, err: any) {\n try {\n onError(err);\n } catch (err) {\n // Send any errors that occur down stream.\n destination.error(err);\n } finally {\n // Ensure finalization.\n this.unsubscribe();\n }\n }\n : super._error;\n this._complete = onComplete\n ? function (this: OperatorSubscriber) {\n try {\n onComplete();\n } catch (err) {\n // Send any errors that occur down stream.\n destination.error(err);\n } finally {\n // Ensure finalization.\n this.unsubscribe();\n }\n }\n : super._complete;\n }\n\n unsubscribe() {\n if (!this.shouldUnsubscribe || this.shouldUnsubscribe()) {\n const { closed } = this;\n super.unsubscribe();\n // Execute additional teardown if we have any and we didn't already do so.\n !closed && this.onFinalize?.();\n }\n }\n}\n", "import { Subscription } from '../Subscription';\n\ninterface AnimationFrameProvider {\n schedule(callback: FrameRequestCallback): Subscription;\n requestAnimationFrame: typeof requestAnimationFrame;\n cancelAnimationFrame: typeof cancelAnimationFrame;\n delegate:\n | {\n requestAnimationFrame: typeof requestAnimationFrame;\n cancelAnimationFrame: typeof cancelAnimationFrame;\n }\n | undefined;\n}\n\nexport const animationFrameProvider: AnimationFrameProvider = {\n // When accessing the delegate, use the variable rather than `this` so that\n // the functions can be called without being bound to the provider.\n schedule(callback) {\n let request = requestAnimationFrame;\n let cancel: typeof cancelAnimationFrame | undefined = cancelAnimationFrame;\n const { delegate } = animationFrameProvider;\n if (delegate) {\n request = delegate.requestAnimationFrame;\n cancel = delegate.cancelAnimationFrame;\n }\n const handle = request((timestamp) => {\n // Clear the cancel function. The request has been fulfilled, so\n // attempting to cancel the request upon unsubscription would be\n // pointless.\n cancel = undefined;\n callback(timestamp);\n });\n return new Subscription(() => cancel?.(handle));\n },\n requestAnimationFrame(...args) {\n const { delegate } = animationFrameProvider;\n return (delegate?.requestAnimationFrame || requestAnimationFrame)(...args);\n },\n cancelAnimationFrame(...args) {\n const { delegate } = animationFrameProvider;\n return (delegate?.cancelAnimationFrame || cancelAnimationFrame)(...args);\n },\n delegate: undefined,\n};\n", "import { createErrorClass } from './createErrorClass';\n\nexport interface ObjectUnsubscribedError extends Error {}\n\nexport interface ObjectUnsubscribedErrorCtor {\n /**\n * @deprecated Internal implementation detail. Do not construct error instances.\n * Cannot be tagged as internal: https://github.com/ReactiveX/rxjs/issues/6269\n */\n new (): ObjectUnsubscribedError;\n}\n\n/**\n * An error thrown when an action is invalid because the object has been\n * unsubscribed.\n *\n * @see {@link Subject}\n * @see {@link BehaviorSubject}\n *\n * @class ObjectUnsubscribedError\n */\nexport const ObjectUnsubscribedError: ObjectUnsubscribedErrorCtor = createErrorClass(\n (_super) =>\n function ObjectUnsubscribedErrorImpl(this: any) {\n _super(this);\n this.name = 'ObjectUnsubscribedError';\n this.message = 'object unsubscribed';\n }\n);\n", "import { Operator } from './Operator';\nimport { Observable } from './Observable';\nimport { Subscriber } from './Subscriber';\nimport { Subscription, EMPTY_SUBSCRIPTION } from './Subscription';\nimport { Observer, SubscriptionLike, TeardownLogic } from './types';\nimport { ObjectUnsubscribedError } from './util/ObjectUnsubscribedError';\nimport { arrRemove } from './util/arrRemove';\nimport { errorContext } from './util/errorContext';\n\n/**\n * A Subject is a special type of Observable that allows values to be\n * multicasted to many Observers. Subjects are like EventEmitters.\n *\n * Every Subject is an Observable and an Observer. You can subscribe to a\n * Subject, and you can call next to feed values as well as error and complete.\n */\nexport class Subject extends Observable implements SubscriptionLike {\n closed = false;\n\n private currentObservers: Observer[] | null = null;\n\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n observers: Observer[] = [];\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n isStopped = false;\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n hasError = false;\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n thrownError: any = null;\n\n /**\n * Creates a \"subject\" by basically gluing an observer to an observable.\n *\n * @nocollapse\n * @deprecated Recommended you do not use. Will be removed at some point in the future. Plans for replacement still under discussion.\n */\n static create: (...args: any[]) => any = (destination: Observer, source: Observable): AnonymousSubject => {\n return new AnonymousSubject(destination, source);\n };\n\n constructor() {\n // NOTE: This must be here to obscure Observable's constructor.\n super();\n }\n\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n lift(operator: Operator): Observable {\n const subject = new AnonymousSubject(this, this);\n subject.operator = operator as any;\n return subject as any;\n }\n\n /** @internal */\n protected _throwIfClosed() {\n if (this.closed) {\n throw new ObjectUnsubscribedError();\n }\n }\n\n next(value: T) {\n errorContext(() => {\n this._throwIfClosed();\n if (!this.isStopped) {\n if (!this.currentObservers) {\n this.currentObservers = Array.from(this.observers);\n }\n for (const observer of this.currentObservers) {\n observer.next(value);\n }\n }\n });\n }\n\n error(err: any) {\n errorContext(() => {\n this._throwIfClosed();\n if (!this.isStopped) {\n this.hasError = this.isStopped = true;\n this.thrownError = err;\n const { observers } = this;\n while (observers.length) {\n observers.shift()!.error(err);\n }\n }\n });\n }\n\n complete() {\n errorContext(() => {\n this._throwIfClosed();\n if (!this.isStopped) {\n this.isStopped = true;\n const { observers } = this;\n while (observers.length) {\n observers.shift()!.complete();\n }\n }\n });\n }\n\n unsubscribe() {\n this.isStopped = this.closed = true;\n this.observers = this.currentObservers = null!;\n }\n\n get observed() {\n return this.observers?.length > 0;\n }\n\n /** @internal */\n protected _trySubscribe(subscriber: Subscriber): TeardownLogic {\n this._throwIfClosed();\n return super._trySubscribe(subscriber);\n }\n\n /** @internal */\n protected _subscribe(subscriber: Subscriber): Subscription {\n this._throwIfClosed();\n this._checkFinalizedStatuses(subscriber);\n return this._innerSubscribe(subscriber);\n }\n\n /** @internal */\n protected _innerSubscribe(subscriber: Subscriber) {\n const { hasError, isStopped, observers } = this;\n if (hasError || isStopped) {\n return EMPTY_SUBSCRIPTION;\n }\n this.currentObservers = null;\n observers.push(subscriber);\n return new Subscription(() => {\n this.currentObservers = null;\n arrRemove(observers, subscriber);\n });\n }\n\n /** @internal */\n protected _checkFinalizedStatuses(subscriber: Subscriber) {\n const { hasError, thrownError, isStopped } = this;\n if (hasError) {\n subscriber.error(thrownError);\n } else if (isStopped) {\n subscriber.complete();\n }\n }\n\n /**\n * Creates a new Observable with this Subject as the source. You can do this\n * to create custom Observer-side logic of the Subject and conceal it from\n * code that uses the Observable.\n * @return {Observable} Observable that the Subject casts to\n */\n asObservable(): Observable {\n const observable: any = new Observable();\n observable.source = this;\n return observable;\n }\n}\n\n/**\n * @class AnonymousSubject\n */\nexport class AnonymousSubject extends Subject {\n constructor(\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n public destination?: Observer,\n source?: Observable\n ) {\n super();\n this.source = source;\n }\n\n next(value: T) {\n this.destination?.next?.(value);\n }\n\n error(err: any) {\n this.destination?.error?.(err);\n }\n\n complete() {\n this.destination?.complete?.();\n }\n\n /** @internal */\n protected _subscribe(subscriber: Subscriber): Subscription {\n return this.source?.subscribe(subscriber) ?? EMPTY_SUBSCRIPTION;\n }\n}\n", "import { Subject } from './Subject';\nimport { Subscriber } from './Subscriber';\nimport { Subscription } from './Subscription';\n\n/**\n * A variant of Subject that requires an initial value and emits its current\n * value whenever it is subscribed to.\n *\n * @class BehaviorSubject\n */\nexport class BehaviorSubject extends Subject {\n constructor(private _value: T) {\n super();\n }\n\n get value(): T {\n return this.getValue();\n }\n\n /** @internal */\n protected _subscribe(subscriber: Subscriber): Subscription {\n const subscription = super._subscribe(subscriber);\n !subscription.closed && subscriber.next(this._value);\n return subscription;\n }\n\n getValue(): T {\n const { hasError, thrownError, _value } = this;\n if (hasError) {\n throw thrownError;\n }\n this._throwIfClosed();\n return _value;\n }\n\n next(value: T): void {\n super.next((this._value = value));\n }\n}\n", "import { TimestampProvider } from '../types';\n\ninterface DateTimestampProvider extends TimestampProvider {\n delegate: TimestampProvider | undefined;\n}\n\nexport const dateTimestampProvider: DateTimestampProvider = {\n now() {\n // Use the variable rather than `this` so that the function can be called\n // without being bound to the provider.\n return (dateTimestampProvider.delegate || Date).now();\n },\n delegate: undefined,\n};\n", "import { Subject } from './Subject';\nimport { TimestampProvider } from './types';\nimport { Subscriber } from './Subscriber';\nimport { Subscription } from './Subscription';\nimport { dateTimestampProvider } from './scheduler/dateTimestampProvider';\n\n/**\n * A variant of {@link Subject} that \"replays\" old values to new subscribers by emitting them when they first subscribe.\n *\n * `ReplaySubject` has an internal buffer that will store a specified number of values that it has observed. Like `Subject`,\n * `ReplaySubject` \"observes\" values by having them passed to its `next` method. When it observes a value, it will store that\n * value for a time determined by the configuration of the `ReplaySubject`, as passed to its constructor.\n *\n * When a new subscriber subscribes to the `ReplaySubject` instance, it will synchronously emit all values in its buffer in\n * a First-In-First-Out (FIFO) manner. The `ReplaySubject` will also complete, if it has observed completion; and it will\n * error if it has observed an error.\n *\n * There are two main configuration items to be concerned with:\n *\n * 1. `bufferSize` - This will determine how many items are stored in the buffer, defaults to infinite.\n * 2. `windowTime` - The amount of time to hold a value in the buffer before removing it from the buffer.\n *\n * Both configurations may exist simultaneously. So if you would like to buffer a maximum of 3 values, as long as the values\n * are less than 2 seconds old, you could do so with a `new ReplaySubject(3, 2000)`.\n *\n * ### Differences with BehaviorSubject\n *\n * `BehaviorSubject` is similar to `new ReplaySubject(1)`, with a couple of exceptions:\n *\n * 1. `BehaviorSubject` comes \"primed\" with a single value upon construction.\n * 2. `ReplaySubject` will replay values, even after observing an error, where `BehaviorSubject` will not.\n *\n * @see {@link Subject}\n * @see {@link BehaviorSubject}\n * @see {@link shareReplay}\n */\nexport class ReplaySubject extends Subject {\n private _buffer: (T | number)[] = [];\n private _infiniteTimeWindow = true;\n\n /**\n * @param bufferSize The size of the buffer to replay on subscription\n * @param windowTime The amount of time the buffered items will stay buffered\n * @param timestampProvider An object with a `now()` method that provides the current timestamp. This is used to\n * calculate the amount of time something has been buffered.\n */\n constructor(\n private _bufferSize = Infinity,\n private _windowTime = Infinity,\n private _timestampProvider: TimestampProvider = dateTimestampProvider\n ) {\n super();\n this._infiniteTimeWindow = _windowTime === Infinity;\n this._bufferSize = Math.max(1, _bufferSize);\n this._windowTime = Math.max(1, _windowTime);\n }\n\n next(value: T): void {\n const { isStopped, _buffer, _infiniteTimeWindow, _timestampProvider, _windowTime } = this;\n if (!isStopped) {\n _buffer.push(value);\n !_infiniteTimeWindow && _buffer.push(_timestampProvider.now() + _windowTime);\n }\n this._trimBuffer();\n super.next(value);\n }\n\n /** @internal */\n protected _subscribe(subscriber: Subscriber): Subscription {\n this._throwIfClosed();\n this._trimBuffer();\n\n const subscription = this._innerSubscribe(subscriber);\n\n const { _infiniteTimeWindow, _buffer } = this;\n // We use a copy here, so reentrant code does not mutate our array while we're\n // emitting it to a new subscriber.\n const copy = _buffer.slice();\n for (let i = 0; i < copy.length && !subscriber.closed; i += _infiniteTimeWindow ? 1 : 2) {\n subscriber.next(copy[i] as T);\n }\n\n this._checkFinalizedStatuses(subscriber);\n\n return subscription;\n }\n\n private _trimBuffer() {\n const { _bufferSize, _timestampProvider, _buffer, _infiniteTimeWindow } = this;\n // If we don't have an infinite buffer size, and we're over the length,\n // use splice to truncate the old buffer values off. Note that we have to\n // double the size for instances where we're not using an infinite time window\n // because we're storing the values and the timestamps in the same array.\n const adjustedBufferSize = (_infiniteTimeWindow ? 1 : 2) * _bufferSize;\n _bufferSize < Infinity && adjustedBufferSize < _buffer.length && _buffer.splice(0, _buffer.length - adjustedBufferSize);\n\n // Now, if we're not in an infinite time window, remove all values where the time is\n // older than what is allowed.\n if (!_infiniteTimeWindow) {\n const now = _timestampProvider.now();\n let last = 0;\n // Search the array for the first timestamp that isn't expired and\n // truncate the buffer up to that point.\n for (let i = 1; i < _buffer.length && (_buffer[i] as number) <= now; i += 2) {\n last = i;\n }\n last && _buffer.splice(0, last + 1);\n }\n }\n}\n", "import { Scheduler } from '../Scheduler';\nimport { Subscription } from '../Subscription';\nimport { SchedulerAction } from '../types';\n\n/**\n * A unit of work to be executed in a `scheduler`. An action is typically\n * created from within a {@link SchedulerLike} and an RxJS user does not need to concern\n * themselves about creating and manipulating an Action.\n *\n * ```ts\n * class Action extends Subscription {\n * new (scheduler: Scheduler, work: (state?: T) => void);\n * schedule(state?: T, delay: number = 0): Subscription;\n * }\n * ```\n *\n * @class Action\n */\nexport class Action extends Subscription {\n constructor(scheduler: Scheduler, work: (this: SchedulerAction, state?: T) => void) {\n super();\n }\n /**\n * Schedules this action on its parent {@link SchedulerLike} for execution. May be passed\n * some context object, `state`. May happen at some point in the future,\n * according to the `delay` parameter, if specified.\n * @param {T} [state] Some contextual data that the `work` function uses when\n * called by the Scheduler.\n * @param {number} [delay] Time to wait before executing the work, where the\n * time unit is implicit and defined by the Scheduler.\n * @return {void}\n */\n public schedule(state?: T, delay: number = 0): Subscription {\n return this;\n }\n}\n", "import type { TimerHandle } from './timerHandle';\ntype SetIntervalFunction = (handler: () => void, timeout?: number, ...args: any[]) => TimerHandle;\ntype ClearIntervalFunction = (handle: TimerHandle) => void;\n\ninterface IntervalProvider {\n setInterval: SetIntervalFunction;\n clearInterval: ClearIntervalFunction;\n delegate:\n | {\n setInterval: SetIntervalFunction;\n clearInterval: ClearIntervalFunction;\n }\n | undefined;\n}\n\nexport const intervalProvider: IntervalProvider = {\n // When accessing the delegate, use the variable rather than `this` so that\n // the functions can be called without being bound to the provider.\n setInterval(handler: () => void, timeout?: number, ...args) {\n const { delegate } = intervalProvider;\n if (delegate?.setInterval) {\n return delegate.setInterval(handler, timeout, ...args);\n }\n return setInterval(handler, timeout, ...args);\n },\n clearInterval(handle) {\n const { delegate } = intervalProvider;\n return (delegate?.clearInterval || clearInterval)(handle as any);\n },\n delegate: undefined,\n};\n", "import { Action } from './Action';\nimport { SchedulerAction } from '../types';\nimport { Subscription } from '../Subscription';\nimport { AsyncScheduler } from './AsyncScheduler';\nimport { intervalProvider } from './intervalProvider';\nimport { arrRemove } from '../util/arrRemove';\nimport { TimerHandle } from './timerHandle';\n\nexport class AsyncAction extends Action {\n public id: TimerHandle | undefined;\n public state?: T;\n // @ts-ignore: Property has no initializer and is not definitely assigned\n public delay: number;\n protected pending: boolean = false;\n\n constructor(protected scheduler: AsyncScheduler, protected work: (this: SchedulerAction, state?: T) => void) {\n super(scheduler, work);\n }\n\n public schedule(state?: T, delay: number = 0): Subscription {\n if (this.closed) {\n return this;\n }\n\n // Always replace the current state with the new state.\n this.state = state;\n\n const id = this.id;\n const scheduler = this.scheduler;\n\n //\n // Important implementation note:\n //\n // Actions only execute once by default, unless rescheduled from within the\n // scheduled callback. This allows us to implement single and repeat\n // actions via the same code path, without adding API surface area, as well\n // as mimic traditional recursion but across asynchronous boundaries.\n //\n // However, JS runtimes and timers distinguish between intervals achieved by\n // serial `setTimeout` calls vs. a single `setInterval` call. An interval of\n // serial `setTimeout` calls can be individually delayed, which delays\n // scheduling the next `setTimeout`, and so on. `setInterval` attempts to\n // guarantee the interval callback will be invoked more precisely to the\n // interval period, regardless of load.\n //\n // Therefore, we use `setInterval` to schedule single and repeat actions.\n // If the action reschedules itself with the same delay, the interval is not\n // canceled. If the action doesn't reschedule, or reschedules with a\n // different delay, the interval will be canceled after scheduled callback\n // execution.\n //\n if (id != null) {\n this.id = this.recycleAsyncId(scheduler, id, delay);\n }\n\n // Set the pending flag indicating that this action has been scheduled, or\n // has recursively rescheduled itself.\n this.pending = true;\n\n this.delay = delay;\n // If this action has already an async Id, don't request a new one.\n this.id = this.id ?? this.requestAsyncId(scheduler, this.id, delay);\n\n return this;\n }\n\n protected requestAsyncId(scheduler: AsyncScheduler, _id?: TimerHandle, delay: number = 0): TimerHandle {\n return intervalProvider.setInterval(scheduler.flush.bind(scheduler, this), delay);\n }\n\n protected recycleAsyncId(_scheduler: AsyncScheduler, id?: TimerHandle, delay: number | null = 0): TimerHandle | undefined {\n // If this action is rescheduled with the same delay time, don't clear the interval id.\n if (delay != null && this.delay === delay && this.pending === false) {\n return id;\n }\n // Otherwise, if the action's delay time is different from the current delay,\n // or the action has been rescheduled before it's executed, clear the interval id\n if (id != null) {\n intervalProvider.clearInterval(id);\n }\n\n return undefined;\n }\n\n /**\n * Immediately executes this action and the `work` it contains.\n * @return {any}\n */\n public execute(state: T, delay: number): any {\n if (this.closed) {\n return new Error('executing a cancelled action');\n }\n\n this.pending = false;\n const error = this._execute(state, delay);\n if (error) {\n return error;\n } else if (this.pending === false && this.id != null) {\n // Dequeue if the action didn't reschedule itself. Don't call\n // unsubscribe(), because the action could reschedule later.\n // For example:\n // ```\n // scheduler.schedule(function doWork(counter) {\n // /* ... I'm a busy worker bee ... */\n // var originalAction = this;\n // /* wait 100ms before rescheduling the action */\n // setTimeout(function () {\n // originalAction.schedule(counter + 1);\n // }, 100);\n // }, 1000);\n // ```\n this.id = this.recycleAsyncId(this.scheduler, this.id, null);\n }\n }\n\n protected _execute(state: T, _delay: number): any {\n let errored: boolean = false;\n let errorValue: any;\n try {\n this.work(state);\n } catch (e) {\n errored = true;\n // HACK: Since code elsewhere is relying on the \"truthiness\" of the\n // return here, we can't have it return \"\" or 0 or false.\n // TODO: Clean this up when we refactor schedulers mid-version-8 or so.\n errorValue = e ? e : new Error('Scheduled action threw falsy error');\n }\n if (errored) {\n this.unsubscribe();\n return errorValue;\n }\n }\n\n unsubscribe() {\n if (!this.closed) {\n const { id, scheduler } = this;\n const { actions } = scheduler;\n\n this.work = this.state = this.scheduler = null!;\n this.pending = false;\n\n arrRemove(actions, this);\n if (id != null) {\n this.id = this.recycleAsyncId(scheduler, id, null);\n }\n\n this.delay = null!;\n super.unsubscribe();\n }\n }\n}\n", "import { Action } from './scheduler/Action';\nimport { Subscription } from './Subscription';\nimport { SchedulerLike, SchedulerAction } from './types';\nimport { dateTimestampProvider } from './scheduler/dateTimestampProvider';\n\n/**\n * An execution context and a data structure to order tasks and schedule their\n * execution. Provides a notion of (potentially virtual) time, through the\n * `now()` getter method.\n *\n * Each unit of work in a Scheduler is called an `Action`.\n *\n * ```ts\n * class Scheduler {\n * now(): number;\n * schedule(work, delay?, state?): Subscription;\n * }\n * ```\n *\n * @class Scheduler\n * @deprecated Scheduler is an internal implementation detail of RxJS, and\n * should not be used directly. Rather, create your own class and implement\n * {@link SchedulerLike}. Will be made internal in v8.\n */\nexport class Scheduler implements SchedulerLike {\n public static now: () => number = dateTimestampProvider.now;\n\n constructor(private schedulerActionCtor: typeof Action, now: () => number = Scheduler.now) {\n this.now = now;\n }\n\n /**\n * A getter method that returns a number representing the current time\n * (at the time this function was called) according to the scheduler's own\n * internal clock.\n * @return {number} A number that represents the current time. May or may not\n * have a relation to wall-clock time. May or may not refer to a time unit\n * (e.g. milliseconds).\n */\n public now: () => number;\n\n /**\n * Schedules a function, `work`, for execution. May happen at some point in\n * the future, according to the `delay` parameter, if specified. May be passed\n * some context object, `state`, which will be passed to the `work` function.\n *\n * The given arguments will be processed an stored as an Action object in a\n * queue of actions.\n *\n * @param {function(state: ?T): ?Subscription} work A function representing a\n * task, or some unit of work to be executed by the Scheduler.\n * @param {number} [delay] Time to wait before executing the work, where the\n * time unit is implicit and defined by the Scheduler itself.\n * @param {T} [state] Some contextual data that the `work` function uses when\n * called by the Scheduler.\n * @return {Subscription} A subscription in order to be able to unsubscribe\n * the scheduled work.\n */\n public schedule(work: (this: SchedulerAction, state?: T) => void, delay: number = 0, state?: T): Subscription {\n return new this.schedulerActionCtor(this, work).schedule(state, delay);\n }\n}\n", "import { Scheduler } from '../Scheduler';\nimport { Action } from './Action';\nimport { AsyncAction } from './AsyncAction';\nimport { TimerHandle } from './timerHandle';\n\nexport class AsyncScheduler extends Scheduler {\n public actions: Array> = [];\n /**\n * A flag to indicate whether the Scheduler is currently executing a batch of\n * queued actions.\n * @type {boolean}\n * @internal\n */\n public _active: boolean = false;\n /**\n * An internal ID used to track the latest asynchronous task such as those\n * coming from `setTimeout`, `setInterval`, `requestAnimationFrame`, and\n * others.\n * @type {any}\n * @internal\n */\n public _scheduled: TimerHandle | undefined;\n\n constructor(SchedulerAction: typeof Action, now: () => number = Scheduler.now) {\n super(SchedulerAction, now);\n }\n\n public flush(action: AsyncAction): void {\n const { actions } = this;\n\n if (this._active) {\n actions.push(action);\n return;\n }\n\n let error: any;\n this._active = true;\n\n do {\n if ((error = action.execute(action.state, action.delay))) {\n break;\n }\n } while ((action = actions.shift()!)); // exhaust the scheduler queue\n\n this._active = false;\n\n if (error) {\n while ((action = actions.shift()!)) {\n action.unsubscribe();\n }\n throw error;\n }\n }\n}\n", "import { AsyncAction } from './AsyncAction';\nimport { AsyncScheduler } from './AsyncScheduler';\n\n/**\n *\n * Async Scheduler\n *\n * Schedule task as if you used setTimeout(task, duration)\n *\n * `async` scheduler schedules tasks asynchronously, by putting them on the JavaScript\n * event loop queue. It is best used to delay tasks in time or to schedule tasks repeating\n * in intervals.\n *\n * If you just want to \"defer\" task, that is to perform it right after currently\n * executing synchronous code ends (commonly achieved by `setTimeout(deferredTask, 0)`),\n * better choice will be the {@link asapScheduler} scheduler.\n *\n * ## Examples\n * Use async scheduler to delay task\n * ```ts\n * import { asyncScheduler } from 'rxjs';\n *\n * const task = () => console.log('it works!');\n *\n * asyncScheduler.schedule(task, 2000);\n *\n * // After 2 seconds logs:\n * // \"it works!\"\n * ```\n *\n * Use async scheduler to repeat task in intervals\n * ```ts\n * import { asyncScheduler } from 'rxjs';\n *\n * function task(state) {\n * console.log(state);\n * this.schedule(state + 1, 1000); // `this` references currently executing Action,\n * // which we reschedule with new state and delay\n * }\n *\n * asyncScheduler.schedule(task, 3000, 0);\n *\n * // Logs:\n * // 0 after 3s\n * // 1 after 4s\n * // 2 after 5s\n * // 3 after 6s\n * ```\n */\n\nexport const asyncScheduler = new AsyncScheduler(AsyncAction);\n\n/**\n * @deprecated Renamed to {@link asyncScheduler}. Will be removed in v8.\n */\nexport const async = asyncScheduler;\n", "import { AsyncAction } from './AsyncAction';\nimport { Subscription } from '../Subscription';\nimport { QueueScheduler } from './QueueScheduler';\nimport { SchedulerAction } from '../types';\nimport { TimerHandle } from './timerHandle';\n\nexport class QueueAction extends AsyncAction {\n constructor(protected scheduler: QueueScheduler, protected work: (this: SchedulerAction, state?: T) => void) {\n super(scheduler, work);\n }\n\n public schedule(state?: T, delay: number = 0): Subscription {\n if (delay > 0) {\n return super.schedule(state, delay);\n }\n this.delay = delay;\n this.state = state;\n this.scheduler.flush(this);\n return this;\n }\n\n public execute(state: T, delay: number): any {\n return delay > 0 || this.closed ? super.execute(state, delay) : this._execute(state, delay);\n }\n\n protected requestAsyncId(scheduler: QueueScheduler, id?: TimerHandle, delay: number = 0): TimerHandle {\n // If delay exists and is greater than 0, or if the delay is null (the\n // action wasn't rescheduled) but was originally scheduled as an async\n // action, then recycle as an async action.\n\n if ((delay != null && delay > 0) || (delay == null && this.delay > 0)) {\n return super.requestAsyncId(scheduler, id, delay);\n }\n\n // Otherwise flush the scheduler starting with this action.\n scheduler.flush(this);\n\n // HACK: In the past, this was returning `void`. However, `void` isn't a valid\n // `TimerHandle`, and generally the return value here isn't really used. So the\n // compromise is to return `0` which is both \"falsy\" and a valid `TimerHandle`,\n // as opposed to refactoring every other instanceo of `requestAsyncId`.\n return 0;\n }\n}\n", "import { AsyncScheduler } from './AsyncScheduler';\n\nexport class QueueScheduler extends AsyncScheduler {\n}\n", "import { QueueAction } from './QueueAction';\nimport { QueueScheduler } from './QueueScheduler';\n\n/**\n *\n * Queue Scheduler\n *\n * Put every next task on a queue, instead of executing it immediately\n *\n * `queue` scheduler, when used with delay, behaves the same as {@link asyncScheduler} scheduler.\n *\n * When used without delay, it schedules given task synchronously - executes it right when\n * it is scheduled. However when called recursively, that is when inside the scheduled task,\n * another task is scheduled with queue scheduler, instead of executing immediately as well,\n * that task will be put on a queue and wait for current one to finish.\n *\n * This means that when you execute task with `queue` scheduler, you are sure it will end\n * before any other task scheduled with that scheduler will start.\n *\n * ## Examples\n * Schedule recursively first, then do something\n * ```ts\n * import { queueScheduler } from 'rxjs';\n *\n * queueScheduler.schedule(() => {\n * queueScheduler.schedule(() => console.log('second')); // will not happen now, but will be put on a queue\n *\n * console.log('first');\n * });\n *\n * // Logs:\n * // \"first\"\n * // \"second\"\n * ```\n *\n * Reschedule itself recursively\n * ```ts\n * import { queueScheduler } from 'rxjs';\n *\n * queueScheduler.schedule(function(state) {\n * if (state !== 0) {\n * console.log('before', state);\n * this.schedule(state - 1); // `this` references currently executing Action,\n * // which we reschedule with new state\n * console.log('after', state);\n * }\n * }, 0, 3);\n *\n * // In scheduler that runs recursively, you would expect:\n * // \"before\", 3\n * // \"before\", 2\n * // \"before\", 1\n * // \"after\", 1\n * // \"after\", 2\n * // \"after\", 3\n *\n * // But with queue it logs:\n * // \"before\", 3\n * // \"after\", 3\n * // \"before\", 2\n * // \"after\", 2\n * // \"before\", 1\n * // \"after\", 1\n * ```\n */\n\nexport const queueScheduler = new QueueScheduler(QueueAction);\n\n/**\n * @deprecated Renamed to {@link queueScheduler}. Will be removed in v8.\n */\nexport const queue = queueScheduler;\n", "import { AsyncAction } from './AsyncAction';\nimport { AnimationFrameScheduler } from './AnimationFrameScheduler';\nimport { SchedulerAction } from '../types';\nimport { animationFrameProvider } from './animationFrameProvider';\nimport { TimerHandle } from './timerHandle';\n\nexport class AnimationFrameAction extends AsyncAction {\n constructor(protected scheduler: AnimationFrameScheduler, protected work: (this: SchedulerAction, state?: T) => void) {\n super(scheduler, work);\n }\n\n protected requestAsyncId(scheduler: AnimationFrameScheduler, id?: TimerHandle, delay: number = 0): TimerHandle {\n // If delay is greater than 0, request as an async action.\n if (delay !== null && delay > 0) {\n return super.requestAsyncId(scheduler, id, delay);\n }\n // Push the action to the end of the scheduler queue.\n scheduler.actions.push(this);\n // If an animation frame has already been requested, don't request another\n // one. If an animation frame hasn't been requested yet, request one. Return\n // the current animation frame request id.\n return scheduler._scheduled || (scheduler._scheduled = animationFrameProvider.requestAnimationFrame(() => scheduler.flush(undefined)));\n }\n\n protected recycleAsyncId(scheduler: AnimationFrameScheduler, id?: TimerHandle, delay: number = 0): TimerHandle | undefined {\n // If delay exists and is greater than 0, or if the delay is null (the\n // action wasn't rescheduled) but was originally scheduled as an async\n // action, then recycle as an async action.\n if (delay != null ? delay > 0 : this.delay > 0) {\n return super.recycleAsyncId(scheduler, id, delay);\n }\n // If the scheduler queue has no remaining actions with the same async id,\n // cancel the requested animation frame and set the scheduled flag to\n // undefined so the next AnimationFrameAction will request its own.\n const { actions } = scheduler;\n if (id != null && actions[actions.length - 1]?.id !== id) {\n animationFrameProvider.cancelAnimationFrame(id as number);\n scheduler._scheduled = undefined;\n }\n // Return undefined so the action knows to request a new async id if it's rescheduled.\n return undefined;\n }\n}\n", "import { AsyncAction } from './AsyncAction';\nimport { AsyncScheduler } from './AsyncScheduler';\n\nexport class AnimationFrameScheduler extends AsyncScheduler {\n public flush(action?: AsyncAction): void {\n this._active = true;\n // The async id that effects a call to flush is stored in _scheduled.\n // Before executing an action, it's necessary to check the action's async\n // id to determine whether it's supposed to be executed in the current\n // flush.\n // Previous implementations of this method used a count to determine this,\n // but that was unsound, as actions that are unsubscribed - i.e. cancelled -\n // are removed from the actions array and that can shift actions that are\n // scheduled to be executed in a subsequent flush into positions at which\n // they are executed within the current flush.\n const flushId = this._scheduled;\n this._scheduled = undefined;\n\n const { actions } = this;\n let error: any;\n action = action || actions.shift()!;\n\n do {\n if ((error = action.execute(action.state, action.delay))) {\n break;\n }\n } while ((action = actions[0]) && action.id === flushId && actions.shift());\n\n this._active = false;\n\n if (error) {\n while ((action = actions[0]) && action.id === flushId && actions.shift()) {\n action.unsubscribe();\n }\n throw error;\n }\n }\n}\n", "import { AnimationFrameAction } from './AnimationFrameAction';\nimport { AnimationFrameScheduler } from './AnimationFrameScheduler';\n\n/**\n *\n * Animation Frame Scheduler\n *\n * Perform task when `window.requestAnimationFrame` would fire\n *\n * When `animationFrame` scheduler is used with delay, it will fall back to {@link asyncScheduler} scheduler\n * behaviour.\n *\n * Without delay, `animationFrame` scheduler can be used to create smooth browser animations.\n * It makes sure scheduled task will happen just before next browser content repaint,\n * thus performing animations as efficiently as possible.\n *\n * ## Example\n * Schedule div height animation\n * ```ts\n * // html:
\n * import { animationFrameScheduler } from 'rxjs';\n *\n * const div = document.querySelector('div');\n *\n * animationFrameScheduler.schedule(function(height) {\n * div.style.height = height + \"px\";\n *\n * this.schedule(height + 1); // `this` references currently executing Action,\n * // which we reschedule with new state\n * }, 0, 0);\n *\n * // You will see a div element growing in height\n * ```\n */\n\nexport const animationFrameScheduler = new AnimationFrameScheduler(AnimationFrameAction);\n\n/**\n * @deprecated Renamed to {@link animationFrameScheduler}. Will be removed in v8.\n */\nexport const animationFrame = animationFrameScheduler;\n", "import { Observable } from '../Observable';\nimport { SchedulerLike } from '../types';\n\n/**\n * A simple Observable that emits no items to the Observer and immediately\n * emits a complete notification.\n *\n * Just emits 'complete', and nothing else.\n *\n * ![](empty.png)\n *\n * A simple Observable that only emits the complete notification. It can be used\n * for composing with other Observables, such as in a {@link mergeMap}.\n *\n * ## Examples\n *\n * Log complete notification\n *\n * ```ts\n * import { EMPTY } from 'rxjs';\n *\n * EMPTY.subscribe({\n * next: () => console.log('Next'),\n * complete: () => console.log('Complete!')\n * });\n *\n * // Outputs\n * // Complete!\n * ```\n *\n * Emit the number 7, then complete\n *\n * ```ts\n * import { EMPTY, startWith } from 'rxjs';\n *\n * const result = EMPTY.pipe(startWith(7));\n * result.subscribe(x => console.log(x));\n *\n * // Outputs\n * // 7\n * ```\n *\n * Map and flatten only odd numbers to the sequence `'a'`, `'b'`, `'c'`\n *\n * ```ts\n * import { interval, mergeMap, of, EMPTY } from 'rxjs';\n *\n * const interval$ = interval(1000);\n * const result = interval$.pipe(\n * mergeMap(x => x % 2 === 1 ? of('a', 'b', 'c') : EMPTY),\n * );\n * result.subscribe(x => console.log(x));\n *\n * // Results in the following to the console:\n * // x is equal to the count on the interval, e.g. (0, 1, 2, 3, ...)\n * // x will occur every 1000ms\n * // if x % 2 is equal to 1, print a, b, c (each on its own)\n * // if x % 2 is not equal to 1, nothing will be output\n * ```\n *\n * @see {@link Observable}\n * @see {@link NEVER}\n * @see {@link of}\n * @see {@link throwError}\n */\nexport const EMPTY = new Observable((subscriber) => subscriber.complete());\n\n/**\n * @param scheduler A {@link SchedulerLike} to use for scheduling\n * the emission of the complete notification.\n * @deprecated Replaced with the {@link EMPTY} constant or {@link scheduled} (e.g. `scheduled([], scheduler)`). Will be removed in v8.\n */\nexport function empty(scheduler?: SchedulerLike) {\n return scheduler ? emptyScheduled(scheduler) : EMPTY;\n}\n\nfunction emptyScheduled(scheduler: SchedulerLike) {\n return new Observable((subscriber) => scheduler.schedule(() => subscriber.complete()));\n}\n", "import { SchedulerLike } from '../types';\nimport { isFunction } from './isFunction';\n\nexport function isScheduler(value: any): value is SchedulerLike {\n return value && isFunction(value.schedule);\n}\n", "import { SchedulerLike } from '../types';\nimport { isFunction } from './isFunction';\nimport { isScheduler } from './isScheduler';\n\nfunction last(arr: T[]): T | undefined {\n return arr[arr.length - 1];\n}\n\nexport function popResultSelector(args: any[]): ((...args: unknown[]) => unknown) | undefined {\n return isFunction(last(args)) ? args.pop() : undefined;\n}\n\nexport function popScheduler(args: any[]): SchedulerLike | undefined {\n return isScheduler(last(args)) ? args.pop() : undefined;\n}\n\nexport function popNumber(args: any[], defaultValue: number): number {\n return typeof last(args) === 'number' ? args.pop()! : defaultValue;\n}\n", "export const isArrayLike = ((x: any): x is ArrayLike => x && typeof x.length === 'number' && typeof x !== 'function');", "import { isFunction } from \"./isFunction\";\n\n/**\n * Tests to see if the object is \"thennable\".\n * @param value the object to test\n */\nexport function isPromise(value: any): value is PromiseLike {\n return isFunction(value?.then);\n}\n", "import { InteropObservable } from '../types';\nimport { observable as Symbol_observable } from '../symbol/observable';\nimport { isFunction } from './isFunction';\n\n/** Identifies an input as being Observable (but not necessary an Rx Observable) */\nexport function isInteropObservable(input: any): input is InteropObservable {\n return isFunction(input[Symbol_observable]);\n}\n", "import { isFunction } from './isFunction';\n\nexport function isAsyncIterable(obj: any): obj is AsyncIterable {\n return Symbol.asyncIterator && isFunction(obj?.[Symbol.asyncIterator]);\n}\n", "/**\n * Creates the TypeError to throw if an invalid object is passed to `from` or `scheduled`.\n * @param input The object that was passed.\n */\nexport function createInvalidObservableTypeError(input: any) {\n // TODO: We should create error codes that can be looked up, so this can be less verbose.\n return new TypeError(\n `You provided ${\n input !== null && typeof input === 'object' ? 'an invalid object' : `'${input}'`\n } where a stream was expected. You can provide an Observable, Promise, ReadableStream, Array, AsyncIterable, or Iterable.`\n );\n}\n", "export function getSymbolIterator(): symbol {\n if (typeof Symbol !== 'function' || !Symbol.iterator) {\n return '@@iterator' as any;\n }\n\n return Symbol.iterator;\n}\n\nexport const iterator = getSymbolIterator();\n", "import { iterator as Symbol_iterator } from '../symbol/iterator';\nimport { isFunction } from './isFunction';\n\n/** Identifies an input as being an Iterable */\nexport function isIterable(input: any): input is Iterable {\n return isFunction(input?.[Symbol_iterator]);\n}\n", "import { ReadableStreamLike } from '../types';\nimport { isFunction } from './isFunction';\n\nexport async function* readableStreamLikeToAsyncGenerator(readableStream: ReadableStreamLike): AsyncGenerator {\n const reader = readableStream.getReader();\n try {\n while (true) {\n const { value, done } = await reader.read();\n if (done) {\n return;\n }\n yield value!;\n }\n } finally {\n reader.releaseLock();\n }\n}\n\nexport function isReadableStreamLike(obj: any): obj is ReadableStreamLike {\n // We don't want to use instanceof checks because they would return\n // false for instances from another Realm, like an