update

node_modules/core-js/modules/es7.observable.js

@@ -0,0 +1,199 @@
+'use strict';
+// https://github.com/zenparsing/es-observable
+var $export = require('./_export');
+var global = require('./_global');
+var core = require('./_core');
+var microtask = require('./_microtask')();
+var OBSERVABLE = require('./_wks')('observable');
+var aFunction = require('./_a-function');
+var anObject = require('./_an-object');
+var anInstance = require('./_an-instance');
+var redefineAll = require('./_redefine-all');
+var hide = require('./_hide');
+var forOf = require('./_for-of');
+var RETURN = forOf.RETURN;
+
+var getMethod = function (fn) {
+  return fn == null ? undefined : aFunction(fn);
+};
+
+var cleanupSubscription = function (subscription) {
+  var cleanup = subscription._c;
+  if (cleanup) {
+    subscription._c = undefined;
+    cleanup();
+  }
+};
+
+var subscriptionClosed = function (subscription) {
+  return subscription._o === undefined;
+};
+
+var closeSubscription = function (subscription) {
+  if (!subscriptionClosed(subscription)) {
+    subscription._o = undefined;
+    cleanupSubscription(subscription);
+  }
+};
+
+var Subscription = function (observer, subscriber) {
+  anObject(observer);
+  this._c = undefined;
+  this._o = observer;
+  observer = new SubscriptionObserver(this);
+  try {
+    var cleanup = subscriber(observer);
+    var subscription = cleanup;
+    if (cleanup != null) {
+      if (typeof cleanup.unsubscribe === 'function') cleanup = function () { subscription.unsubscribe(); };
+      else aFunction(cleanup);
+      this._c = cleanup;
+    }
+  } catch (e) {
+    observer.error(e);
+    return;
+  } if (subscriptionClosed(this)) cleanupSubscription(this);
+};
+
+Subscription.prototype = redefineAll({}, {
+  unsubscribe: function unsubscribe() { closeSubscription(this); }
+});
+
+var SubscriptionObserver = function (subscription) {
+  this._s = subscription;
+};
+
+SubscriptionObserver.prototype = redefineAll({}, {
+  next: function next(value) {
+    var subscription = this._s;
+    if (!subscriptionClosed(subscription)) {
+      var observer = subscription._o;
+      try {
+        var m = getMethod(observer.next);
+        if (m) return m.call(observer, value);
+      } catch (e) {
+        try {
+          closeSubscription(subscription);
+        } finally {
+          throw e;
+        }
+      }
+    }
+  },
+  error: function error(value) {
+    var subscription = this._s;
+    if (subscriptionClosed(subscription)) throw value;
+    var observer = subscription._o;
+    subscription._o = undefined;
+    try {
+      var m = getMethod(observer.error);
+      if (!m) throw value;
+      value = m.call(observer, value);
+    } catch (e) {
+      try {
+        cleanupSubscription(subscription);
+      } finally {
+        throw e;
+      }
+    } cleanupSubscription(subscription);
+    return value;
+  },
+  complete: function complete(value) {
+    var subscription = this._s;
+    if (!subscriptionClosed(subscription)) {
+      var observer = subscription._o;
+      subscription._o = undefined;
+      try {
+        var m = getMethod(observer.complete);
+        value = m ? m.call(observer, value) : undefined;
+      } catch (e) {
+        try {
+          cleanupSubscription(subscription);
+        } finally {
+          throw e;
+        }
+      } cleanupSubscription(subscription);
+      return value;
+    }
+  }
+});
+
+var $Observable = function Observable(subscriber) {
+  anInstance(this, $Observable, 'Observable', '_f')._f = aFunction(subscriber);
+};
+
+redefineAll($Observable.prototype, {
+  subscribe: function subscribe(observer) {
+    return new Subscription(observer, this._f);
+  },
+  forEach: function forEach(fn) {
+    var that = this;
+    return new (core.Promise || global.Promise)(function (resolve, reject) {
+      aFunction(fn);
+      var subscription = that.subscribe({
+        next: function (value) {
+          try {
+            return fn(value);
+          } catch (e) {
+            reject(e);
+            subscription.unsubscribe();
+          }
+        },
+        error: reject,
+        complete: resolve
+      });
+    });
+  }
+});
+
+redefineAll($Observable, {
+  from: function from(x) {
+    var C = typeof this === 'function' ? this : $Observable;
+    var method = getMethod(anObject(x)[OBSERVABLE]);
+    if (method) {
+      var observable = anObject(method.call(x));
+      return observable.constructor === C ? observable : new C(function (observer) {
+        return observable.subscribe(observer);
+      });
+    }
+    return new C(function (observer) {
+      var done = false;
+      microtask(function () {
+        if (!done) {
+          try {
+            if (forOf(x, false, function (it) {
+              observer.next(it);
+              if (done) return RETURN;
+            }) === RETURN) return;
+          } catch (e) {
+            if (done) throw e;
+            observer.error(e);
+            return;
+          } observer.complete();
+        }
+      });
+      return function () { done = true; };
+    });
+  },
+  of: function of() {
+    for (var i = 0, l = arguments.length, items = new Array(l); i < l;) items[i] = arguments[i++];
+    return new (typeof this === 'function' ? this : $Observable)(function (observer) {
+      var done = false;
+      microtask(function () {
+        if (!done) {
+          for (var j = 0; j < items.length; ++j) {
+            observer.next(items[j]);
+            if (done) return;
+          } observer.complete();
+        }
+      });
+      return function () { done = true; };
+    });
+  }
+});
+
+hide($Observable.prototype, OBSERVABLE, function () { return this; });
+
+$export($export.G, { Observable: $Observable });
+
+require('./_set-species')('Observable');