feat: initial commit

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

@@ -0,0 +1,197 @@
+import { fromArray } from './fromArray';
+import { isArray } from '../util/isArray';
+import { Subscriber } from '../Subscriber';
+import { iterator as Symbol_iterator } from '../../internal/symbol/iterator';
+import { SimpleOuterSubscriber, SimpleInnerSubscriber, innerSubscribe } from '../innerSubscribe';
+export function zip(...observables) {
+    const resultSelector = observables[observables.length - 1];
+    if (typeof resultSelector === 'function') {
+        observables.pop();
+    }
+    return fromArray(observables, undefined).lift(new ZipOperator(resultSelector));
+}
+export class ZipOperator {
+    constructor(resultSelector) {
+        this.resultSelector = resultSelector;
+    }
+    call(subscriber, source) {
+        return source.subscribe(new ZipSubscriber(subscriber, this.resultSelector));
+    }
+}
+export class ZipSubscriber extends Subscriber {
+    constructor(destination, resultSelector, values = Object.create(null)) {
+        super(destination);
+        this.resultSelector = resultSelector;
+        this.iterators = [];
+        this.active = 0;
+        this.resultSelector = (typeof resultSelector === 'function') ? resultSelector : undefined;
+    }
+    _next(value) {
+        const iterators = this.iterators;
+        if (isArray(value)) {
+            iterators.push(new StaticArrayIterator(value));
+        }
+        else if (typeof value[Symbol_iterator] === 'function') {
+            iterators.push(new StaticIterator(value[Symbol_iterator]()));
+        }
+        else {
+            iterators.push(new ZipBufferIterator(this.destination, this, value));
+        }
+    }
+    _complete() {
+        const iterators = this.iterators;
+        const len = iterators.length;
+        this.unsubscribe();
+        if (len === 0) {
+            this.destination.complete();
+            return;
+        }
+        this.active = len;
+        for (let i = 0; i < len; i++) {
+            let iterator = iterators[i];
+            if (iterator.stillUnsubscribed) {
+                const destination = this.destination;
+                destination.add(iterator.subscribe());
+            }
+            else {
+                this.active--;
+            }
+        }
+    }
+    notifyInactive() {
+        this.active--;
+        if (this.active === 0) {
+            this.destination.complete();
+        }
+    }
+    checkIterators() {
+        const iterators = this.iterators;
+        const len = iterators.length;
+        const destination = this.destination;
+        for (let i = 0; i < len; i++) {
+            let iterator = iterators[i];
+            if (typeof iterator.hasValue === 'function' && !iterator.hasValue()) {
+                return;
+            }
+        }
+        let shouldComplete = false;
+        const args = [];
+        for (let i = 0; i < len; i++) {
+            let iterator = iterators[i];
+            let result = iterator.next();
+            if (iterator.hasCompleted()) {
+                shouldComplete = true;
+            }
+            if (result.done) {
+                destination.complete();
+                return;
+            }
+            args.push(result.value);
+        }
+        if (this.resultSelector) {
+            this._tryresultSelector(args);
+        }
+        else {
+            destination.next(args);
+        }
+        if (shouldComplete) {
+            destination.complete();
+        }
+    }
+    _tryresultSelector(args) {
+        let result;
+        try {
+            result = this.resultSelector.apply(this, args);
+        }
+        catch (err) {
+            this.destination.error(err);
+            return;
+        }
+        this.destination.next(result);
+    }
+}
+class StaticIterator {
+    constructor(iterator) {
+        this.iterator = iterator;
+        this.nextResult = iterator.next();
+    }
+    hasValue() {
+        return true;
+    }
+    next() {
+        const result = this.nextResult;
+        this.nextResult = this.iterator.next();
+        return result;
+    }
+    hasCompleted() {
+        const nextResult = this.nextResult;
+        return Boolean(nextResult && nextResult.done);
+    }
+}
+class StaticArrayIterator {
+    constructor(array) {
+        this.array = array;
+        this.index = 0;
+        this.length = 0;
+        this.length = array.length;
+    }
+    [Symbol_iterator]() {
+        return this;
+    }
+    next(value) {
+        const i = this.index++;
+        const array = this.array;
+        return i < this.length ? { value: array[i], done: false } : { value: null, done: true };
+    }
+    hasValue() {
+        return this.array.length > this.index;
+    }
+    hasCompleted() {
+        return this.array.length === this.index;
+    }
+}
+class ZipBufferIterator extends SimpleOuterSubscriber {
+    constructor(destination, parent, observable) {
+        super(destination);
+        this.parent = parent;
+        this.observable = observable;
+        this.stillUnsubscribed = true;
+        this.buffer = [];
+        this.isComplete = false;
+    }
+    [Symbol_iterator]() {
+        return this;
+    }
+    next() {
+        const buffer = this.buffer;
+        if (buffer.length === 0 && this.isComplete) {
+            return { value: null, done: true };
+        }
+        else {
+            return { value: buffer.shift(), done: false };
+        }
+    }
+    hasValue() {
+        return this.buffer.length > 0;
+    }
+    hasCompleted() {
+        return this.buffer.length === 0 && this.isComplete;
+    }
+    notifyComplete() {
+        if (this.buffer.length > 0) {
+            this.isComplete = true;
+            this.parent.notifyInactive();
+        }
+        else {
+            this.destination.complete();
+        }
+    }
+    notifyNext(innerValue) {
+        this.buffer.push(innerValue);
+        this.parent.checkIterators();
+    }
+    subscribe() {
+        return innerSubscribe(this.observable, new SimpleInnerSubscriber(this));
+    }
+}
+//# sourceMappingURL=zip.js.map