feat: initial commit

node_modules/rxjs/_esm2015/internal/observable/combineLatest.js

@@ -0,0 +1,89 @@
+import { isScheduler } from '../util/isScheduler';
+import { isArray } from '../util/isArray';
+import { OuterSubscriber } from '../OuterSubscriber';
+import { subscribeToResult } from '../util/subscribeToResult';
+import { fromArray } from './fromArray';
+const NONE = {};
+export function combineLatest(...observables) {
+    let resultSelector = undefined;
+    let scheduler = undefined;
+    if (isScheduler(observables[observables.length - 1])) {
+        scheduler = observables.pop();
+    }
+    if (typeof observables[observables.length - 1] === 'function') {
+        resultSelector = observables.pop();
+    }
+    if (observables.length === 1 && isArray(observables[0])) {
+        observables = observables[0];
+    }
+    return fromArray(observables, scheduler).lift(new CombineLatestOperator(resultSelector));
+}
+export class CombineLatestOperator {
+    constructor(resultSelector) {
+        this.resultSelector = resultSelector;
+    }
+    call(subscriber, source) {
+        return source.subscribe(new CombineLatestSubscriber(subscriber, this.resultSelector));
+    }
+}
+export class CombineLatestSubscriber extends OuterSubscriber {
+    constructor(destination, resultSelector) {
+        super(destination);
+        this.resultSelector = resultSelector;
+        this.active = 0;
+        this.values = [];
+        this.observables = [];
+    }
+    _next(observable) {
+        this.values.push(NONE);
+        this.observables.push(observable);
+    }
+    _complete() {
+        const observables = this.observables;
+        const len = observables.length;
+        if (len === 0) {
+            this.destination.complete();
+        }
+        else {
+            this.active = len;
+            this.toRespond = len;
+            for (let i = 0; i < len; i++) {
+                const observable = observables[i];
+                this.add(subscribeToResult(this, observable, undefined, i));
+            }
+        }
+    }
+    notifyComplete(unused) {
+        if ((this.active -= 1) === 0) {
+            this.destination.complete();
+        }
+    }
+    notifyNext(_outerValue, innerValue, outerIndex) {
+        const values = this.values;
+        const oldVal = values[outerIndex];
+        const toRespond = !this.toRespond
+            ? 0
+            : oldVal === NONE ? --this.toRespond : this.toRespond;
+        values[outerIndex] = innerValue;
+        if (toRespond === 0) {
+            if (this.resultSelector) {
+                this._tryResultSelector(values);
+            }
+            else {
+                this.destination.next(values.slice());
+            }
+        }
+    }
+    _tryResultSelector(values) {
+        let result;
+        try {
+            result = this.resultSelector.apply(this, values);
+        }
+        catch (err) {
+            this.destination.error(err);
+            return;
+        }
+        this.destination.next(result);
+    }
+}
+//# sourceMappingURL=combineLatest.js.map