initial update

node_modules/zen-observable/lib/extras.js

@@ -0,0 +1,132 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.merge = merge;
+exports.combineLatest = combineLatest;
+exports.zip = zip;
+
+var _Observable = require("./Observable.js");
+
+// Emits all values from all inputs in parallel
+function merge() {
+  for (var _len = arguments.length, sources = new Array(_len), _key = 0; _key < _len; _key++) {
+    sources[_key] = arguments[_key];
+  }
+
+  return new _Observable.Observable(function (observer) {
+    if (sources.length === 0) return _Observable.Observable.from([]);
+    var count = sources.length;
+    var subscriptions = sources.map(function (source) {
+      return _Observable.Observable.from(source).subscribe({
+        next: function (v) {
+          observer.next(v);
+        },
+        error: function (e) {
+          observer.error(e);
+        },
+        complete: function () {
+          if (--count === 0) observer.complete();
+        }
+      });
+    });
+    return function () {
+      return subscriptions.forEach(function (s) {
+        return s.unsubscribe();
+      });
+    };
+  });
+} // Emits arrays containing the most current values from each input
+
+
+function combineLatest() {
+  for (var _len2 = arguments.length, sources = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
+    sources[_key2] = arguments[_key2];
+  }
+
+  return new _Observable.Observable(function (observer) {
+    if (sources.length === 0) return _Observable.Observable.from([]);
+    var count = sources.length;
+    var seen = new Set();
+    var seenAll = false;
+    var values = sources.map(function () {
+      return undefined;
+    });
+    var subscriptions = sources.map(function (source, index) {
+      return _Observable.Observable.from(source).subscribe({
+        next: function (v) {
+          values[index] = v;
+
+          if (!seenAll) {
+            seen.add(index);
+            if (seen.size !== sources.length) return;
+            seen = null;
+            seenAll = true;
+          }
+
+          observer.next(Array.from(values));
+        },
+        error: function (e) {
+          observer.error(e);
+        },
+        complete: function () {
+          if (--count === 0) observer.complete();
+        }
+      });
+    });
+    return function () {
+      return subscriptions.forEach(function (s) {
+        return s.unsubscribe();
+      });
+    };
+  });
+} // Emits arrays containing the matching index values from each input
+
+
+function zip() {
+  for (var _len3 = arguments.length, sources = new Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {
+    sources[_key3] = arguments[_key3];
+  }
+
+  return new _Observable.Observable(function (observer) {
+    if (sources.length === 0) return _Observable.Observable.from([]);
+    var queues = sources.map(function () {
+      return [];
+    });
+
+    function done() {
+      return queues.some(function (q, i) {
+        return q.length === 0 && subscriptions[i].closed;
+      });
+    }
+
+    var subscriptions = sources.map(function (source, index) {
+      return _Observable.Observable.from(source).subscribe({
+        next: function (v) {
+          queues[index].push(v);
+
+          if (queues.every(function (q) {
+            return q.length > 0;
+          })) {
+            observer.next(queues.map(function (q) {
+              return q.shift();
+            }));
+            if (done()) observer.complete();
+          }
+        },
+        error: function (e) {
+          observer.error(e);
+        },
+        complete: function () {
+          if (done()) observer.complete();
+        }
+      });
+    });
+    return function () {
+      return subscriptions.forEach(function (s) {
+        return s.unsubscribe();
+      });
+    };
+  });
+}