@reactivex/rxjs/dist/es6/operator/every.js

Reactive Extensions for modern JavaScript

import { Subscriber } from '../Subscriber';
/**
 * Returns an Observable that emits whether or not every item of the source satisfies the condition specified.
 * @param {function} predicate a function for determining if an item meets a specified condition.
 * @param {any} [thisArg] optional object to use for `this` in the callback
 * @return {Observable} an Observable of booleans that determines if all items of the source Observable meet the condition specified.
 * @method every
 * @owner Observable
 */
export function every(predicate, thisArg) {
    const source = this;
    return source.lift(new EveryOperator(predicate, thisArg, source));
}
class EveryOperator {
    constructor(predicate, thisArg, source) {
        this.predicate = predicate;
        this.thisArg = thisArg;
        this.source = source;
    }
    call(observer, source) {
        return source._subscribe(new EverySubscriber(observer, this.predicate, this.thisArg, this.source));
    }
}
/**
 * We need this JSDoc comment for affecting ESDoc.
 * @ignore
 * @extends {Ignored}
 */
class EverySubscriber extends Subscriber {
    constructor(destination, predicate, thisArg, source) {
        super(destination);
        this.predicate = predicate;
        this.thisArg = thisArg;
        this.source = source;
        this.index = 0;
        this.thisArg = thisArg || this;
    }
    notifyComplete(everyValueMatch) {
        this.destination.next(everyValueMatch);
        this.destination.complete();
    }
    _next(value) {
        let result = false;
        try {
            result = this.predicate.call(this.thisArg, value, this.index++, this.source);
        }
        catch (err) {
            this.destination.error(err);
            return;
        }
        if (!result) {
            this.notifyComplete(false);
        }
    }
    _complete() {
        this.notifyComplete(true);
    }
}
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