first commit

.browserslistrc

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+defaults
+last 2 versions
+not ie <= 12
+not ie_mob <= 12
+maintained node versions

.gitignore

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+.idea
+lib
+dist
+packages/**/lib
+packages/**/dist
+node_modules
+coverage
+packages/**/coverage
+*.bat
+.ftpauth
+*.log
+.jest-*
+.cache
+.coverage

CLA.txt

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+Contributor Agreement
+
+By signing this Agreement, the undersigned party (“You”) understand,
+accept and agree to the following terms and conditions for your present
+and future Contributions submitted to Metro5 (the “Original Code”).
+“Contribution” shall mean the code, documentation or any work of authorship,
+including any modifications or additions to an existing work that is
+submitted by you in connection with the Original Code.
+
+Assignment.
+
+By submitting a Contribution you assign to the copyright holder of the Original Code
+to which you contributed (the “Copyright Holder”) all rights, title and interest you
+have in the Contribution, including but not limited to, the copyrights, and the right
+to use, distribute and change the license of the Contribution, and you waive any rights,
+including any moral rights, database rights, etc., that may affect the Copyright Holder’s
+ownership of the copyright in the Contribution.
+
+In the event that the assignment above shall be determined by competent court as invalid,
+you hereby grant to the Copyright Holder a perpetual, worldwide, exclusive, no-charge,
+royalty-free, irrevocable license to use the Contribution and any underlying intellectual
+property (including patents, if any) in any manner, including without limitation to reproduce,
+prepare derivative works of, publicly display, publicly perform, sub-license,
+and distribute your Contributions and such derivative works.
+
+By executing this Agreement which provides for the above assignment, you agree that the
+Copyright Holder shall have the right to make any change to your Contribution, including
+but not limited to, to apply dual licensing model on the Contribution.
+
+Your employer.
+
+You represent that you are legally entitled to grant the above assignment and license.
+If your employer has rights to intellectual property that is included in your Contributions,
+you represent that you have received the necessary permission from your employer to make
+these Contributions and consummate the above assignment and grant of license and that your
+employer has waived such rights for your Contributions.
+
+Contributor who is an Organization.
+
+If you are signing this Agreement on behalf of an organization, you represent and warrant
+that you have the authority to agree to this Agreement on behalf on your organization
+and to bind such organization (including corporation) by the obligations contained in this Agreement.
+Originality of Work. You represent that each of your Contributions is your original work.
+
+Any Contribution submitted to the Original Code is not guaranteed to be accepted by the
+Copyright Holder of the Original Code.
+
+NO WARRANTY.
+
+EXCEPT AS EXPLICITLY SET FORTH IN THIS AGREEMENT, YOU PROVIDE YOUR CONTRIBUTIONS ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+By filling the information below, I have agreed and accepted on my behalf (and, where applicable, on behalf of my organization):
+
+Signature: _________________________
+
+Name: _________________________
+
+Organization Name (if none, type “N/A”): _________________________
+
+Date Signed:  _________________________
+
+Github Username: _________________________
+
+Email Address: _________________________

CONTRIBUTING.md

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+## Issues Guidelines
+
+Before create issue:
+- check for existing issues.
+- create **pen** on [Codepen.io](https://codepen.io) with your problem.
+- describe the problem in detail (use issue template).
+
+## Pull Request Guidelines
+**Before create the pull request, you must sign the [CLA (Contributor License Agreement)](CLA.txt).**
+
+The `master` branch is basically just a snapshot of the latest stable release. **Do not submit PRs against the `master` branch.**
+
+To create pull request:
+- Each pull request should close `one problem`.
+- Check that you are using the latest version of the library.
+- Create pull request to the `latest develop branch` (a greatest number).
+- The patch must contains files in `source` folder only.
+- Add patch keyword to your pull request title: `fix bug`, `update feature`, `add feature`.
+- If you are resolving a special issue, add `(fix #xxxx[,#xxx])` (#xxxx is the issue id) in your PR title.

LICENSE

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+The MIT License (MIT)
+
+Copyright (c) 2020 Serhii Pimenov.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

babel.config.json

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+{
+    "presets": [
+        [
+            "@babel/preset-env",
+            {
+                "targets": {
+                    "esmodules": true
+                }
+            }
+        ]
+    ],
+    "plugins": [
+        "@babel/plugin-proposal-class-properties"
+    ]
+}

jest.config.js

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+module.exports = {
+    collectCoverage: true,
+    collectCoverageFrom: [
+        'packages/src/**/*.{js}',
+        '!**/node_modules/**',
+    ],
+    roots: [
+        'packages/',
+    ],
+    cacheDirectory: "<root>.cache",
+    coverageDirectory: "<root>.coverage",
+};

lerna.json

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+{
+  "npmClient": "yarn",
+  "packages": [
+    "packages/*"
+  ],
+  "version": "independent",
+  "useWorkspaces": true
+}