Removed rxjs dependencies

lib/actor.js

@@ -5,7 +5,6 @@ const { ActorReference, TemporaryReference, Nobody } = require('./references');
 const Queue = require('denque');
 const assert = require('assert');
 const freeze = require('./freeze');
-const { Subject } = require('rxjs');
 const { stop } = require('./functions');
 const { defaultSupervisionPolicy, SupervisionActions } = require('./supervision');
 
@@ -29,7 +28,6 @@ class Actor {
     this.children = new Map();
     this.childReferences = new Map();
     this.busy = false;
-    this.subject = new Subject();
     this.mailbox = new Queue();
     this.immediate = undefined;
     this.parent.childSpawned(this);
@@ -123,20 +121,11 @@ class Actor {
     delete this.parent;
     [...this.children.values()].forEach(stop);
     this.stopped = true;
-    this.subject.complete();
-  }
-
-  get state$ () {
-    console.error('nact deprecation notice: state$ is deprecated');
-    return this.subject.asObservable();
   }
 
   processNext (next, initial = false) {
     if (!this.stopped) {
       if (next !== undefined || initial) {
-        if (this.state !== next) {
-          this.subject.next(next);
-        }
         this.state = next;
         if (!this.mailbox.isEmpty()) {
           let { message, sender } = this.mailbox.shift();

lib/functions.js

@@ -26,15 +26,8 @@ const dispatch = (actor, msg, sender) => {
     concreteActor.dispatch(msg, sender);
 };
 
-// Deprecated
-const state$ = (actor) => {
-  let concreteActor = systemMap.find(actor.system.name, actor);
-  return concreteActor && concreteActor.state$;
-};
-
 module.exports = {
   stop,
   query,
-  dispatch,
-  state$
+  dispatch
 };

lib/index.js

@@ -1,5 +1,5 @@
 const { spawn, spawnStateless } = require('./actor');
-const { stop, state$, query, dispatch } = require('./functions');
+const { stop, query, dispatch } = require('./functions');
 const { spawnPersistent, configurePersistence } = require('./persistence');
 const { configureLogging, logNothing, logToConsole } = require('./monitoring');
 const time = require('./time');
@@ -12,7 +12,6 @@ module.exports = {
   query,
   dispatch,
   stop,
-  state$,
   spawnPersistent,
   configurePersistence,
   configureLogging,

lib/persistence/persistent-actor.js

@@ -1,4 +1,3 @@
-require('rxjs');
 const { PersistedEvent, PersistedSnapshot } = require('./persistence-engine');
 const { Actor } = require('../actor');
 const freeze = require('../freeze');
@@ -44,16 +43,16 @@ class PersistentActor extends Actor {
           sequenceNumber = snapshot.sequenceNumber;
         }
 
-        this.persistenceEngine.events(this.key, sequenceNumber)
-          .distinct(evt => evt.sequenceNumber)
+        this.persistenceEngine
+          .events(this.key, sequenceNumber)
           .reduce(async (prev, msg, index) => {
             const [state] = await prev;
             const context = { ...this.createContext(this.reference), recovering: true };
             // Might not be an async function. Using promise.resolve to force it into that form
             const nextState = await Promise.resolve(this.f.call(context, freeze(state), msg.data, context));
             return [nextState, msg.sequenceNumber, index];
           }, Promise.resolve([initialState, sequenceNumber, 0]))
-          .subscribe(async (result) => {
+          .then(async (result) => {
             // Message count can be different to sequenceNumber if events have been deleted from the database
             const [state, sequenceNumber, messageCount] = await result;
             this.sequenceNumber = sequenceNumber;

package.json

@@ -1,6 +1,6 @@
 {
   "name": "nact",
-  "version": "5.0.0",
+  "version": "6.0.0",
   "description": "nact ⇒ node.js + actors = your services have never been so µ",
   "main": "lib/index.js",
   "scripts": {
@@ -36,8 +36,7 @@
     "url": "http://github.com/ncthbrt/nact/issues"
   },
   "dependencies": {
-    "denque": "^1.2.2",
-    "rxjs": "^5.4.3"
+    "denque": "^1.2.2"
   },
   "devDependencies": {
     "chai": "^4.1.1",

test/actor.js

@@ -4,7 +4,7 @@ const chai = require('chai');
 const chaiAsPromised = require('chai-as-promised');
 chai.use(chaiAsPromised);
 chai.should();
-const { start, spawn, spawnStateless, dispatch, stop, query, state$, milliseconds } = require('../lib');
+const { start, spawn, spawnStateless, dispatch, stop, query, milliseconds } = require('../lib');
 const delay = (duration) => new Promise((resolve, reject) => setTimeout(() => resolve(), duration));
 const { ActorPath } = require('../lib/paths');
 const { applyOrThrowIfStopped } = require('../lib/system-map');
@@ -537,49 +537,4 @@ describe('Actor', function () {
       result2.should.equal(1);
     });
   });
-
-  describe('#state$', function () {
-    let system;
-    beforeEach(() => { system = start(); });
-    afterEach(() => stop(system));
-
-    it('should allow subscription to state changes', async function () {
-      let actor = spawn(system, (state, msg) => msg);
-      let arr = [];
-      state$(actor).subscribe(value => {
-        arr = [...arr, value];
-      });
-      dispatch(actor, 1);
-      dispatch(actor, 2);
-      dispatch(actor, 3);
-      await retry(() => arr.should.deep.equal([1, 2, 3]), 5, 10);
-    });
-
-    it('should allow only emit when state has changed', async function () {
-      let state1 = { hello: 'world' };
-      let state2 = { it_has: 'been fun' };
-
-      let actor = spawn(system, (state, msg) => msg);
-      let arr = [];
-      state$(actor).subscribe(value => {
-        arr = [...arr, value];
-      });
-      dispatch(actor, state1);
-      dispatch(actor, state1);
-      dispatch(actor, state2);
-
-      await retry(() => arr.should.deep.equal([state1, state2]), 5, 10);
-    });
-
-    it('should emit done when the actor is stopped', async function () {
-      let actor = spawn(system, (state, msg) => msg);
-      let observableClosed = false;
-      state$(actor).last().subscribe(x => { observableClosed = true; });
-      dispatch(actor, 1);
-      dispatch(actor, 2);
-      await delay(10);
-      stop(actor);
-      await retry(() => observableClosed.should.be.true, 5, 10);
-    });
-  });
 });

test/mock-persistence-engine.js

@@ -1,5 +1,4 @@
 const { AbstractPersistenceEngine } = require('../lib/persistence');
-const { Observable } = require('rxjs');
 
 class MockPersistenceEngine extends AbstractPersistenceEngine {
   constructor (events = {}, snapshots = {}, takeSnapshotIsWorking = true) {
@@ -28,7 +27,7 @@ class MockPersistenceEngine extends AbstractPersistenceEngine {
   events (persistenceKey, offset = 0, limit, tags) {
     const persistedEvents = (this._events[persistenceKey] || []);
     const slice = persistedEvents.slice(offset, limit ? offset + limit : undefined);
-    return Observable.from(slice);
+    return slice;
   }
 
   persist (persistedEvent) {

test/partially-broken-persistence-engine.js

@@ -1,6 +1,4 @@
 const { AbstractPersistenceEngine } = require('../lib/persistence');
-const Rx = require('rxjs');
-const { Observable } = Rx;
 
 class PartiallyBrokenPersistenceEngine extends AbstractPersistenceEngine {
   constructor (events = new Map(), failIndex, maxFailures) {
@@ -14,7 +12,7 @@ class PartiallyBrokenPersistenceEngine extends AbstractPersistenceEngine {
   events (persistenceKey, offset = 0, limit, tags) {
     const persistedEvents = (this._events[persistenceKey] || []);
     const slice = persistedEvents.slice(offset, limit ? offset + limit : undefined);
-    return Observable.from(slice).map((item, index) => {
+    return slice.map((item, index) => {
       if (index < this.failIndex) {
         return item;
       }

yarn.lock

@@ -2330,12 +2330,6 @@ rx-lite@^3.1.2:
   version "3.1.2"
   resolved "https://registry.yarnpkg.com/rx-lite/-/rx-lite-3.1.2.tgz#19ce502ca572665f3b647b10939f97fd1615f102"
 
-rxjs@^5.4.3:
-  version "5.4.3"
-  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-5.4.3.tgz#0758cddee6033d68e0fd53676f0f3596ce3d483f"
-  dependencies:
-    symbol-observable "^1.0.1"
-
 safe-buffer@^5.0.1, safe-buffer@^5.1.1, safe-buffer@~5.1.0, safe-buffer@~5.1.1:
   version "5.1.1"
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.1.tgz#893312af69b2123def71f57889001671eeb2c853"
@@ -2572,10 +2566,6 @@ supports-color@^4.4.0:
   dependencies:
     has-flag "^2.0.0"
 
-symbol-observable@^1.0.1:
-  version "1.0.4"
-  resolved "https://registry.yarnpkg.com/symbol-observable/-/symbol-observable-1.0.4.tgz#29bf615d4aa7121bdd898b22d4b3f9bc4e2aa03d"
-
 table@^3.7.8:
   version "3.8.3"
   resolved "https://registry.yarnpkg.com/table/-/table-3.8.3.tgz#2bbc542f0fda9861a755d3947fefd8b3f513855f"