@acutmore/rxjs
Version:
Reactive Extensions for modern JavaScript
78 lines • 3.03 kB
JavaScript
var __extends = (this && this.__extends) || (function () {
var extendStatics = Object.setPrototypeOf ||
({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
return function (d, b) {
extendStatics(d, b);
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
})();
import { Subscriber } from '../Subscriber';
/**
* Returns an Observable that emits whether or not every item of the source satisfies the condition specified.
*
* @example <caption>A simple example emitting true if all elements are less than 5, false otherwise</caption>
* Observable.of(1, 2, 3, 4, 5, 6)
* .every(x => x < 5)
* .subscribe(x => console.log(x)); // -> false
*
* @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) {
return function (source) { return source.lift(new EveryOperator(predicate, thisArg, source)); };
}
var EveryOperator = /** @class */ (function () {
function EveryOperator(predicate, thisArg, source) {
this.predicate = predicate;
this.thisArg = thisArg;
this.source = source;
}
EveryOperator.prototype.call = function (observer, source) {
return source.subscribe(new EverySubscriber(observer, this.predicate, this.thisArg, this.source));
};
return EveryOperator;
}());
/**
* We need this JSDoc comment for affecting ESDoc.
* @ignore
* @extends {Ignored}
*/
var EverySubscriber = /** @class */ (function (_super) {
__extends(EverySubscriber, _super);
function EverySubscriber(destination, predicate, thisArg, source) {
var _this = _super.call(this, destination) || this;
_this.predicate = predicate;
_this.thisArg = thisArg;
_this.source = source;
_this.index = 0;
_this.thisArg = thisArg || _this;
return _this;
}
EverySubscriber.prototype.notifyComplete = function (everyValueMatch) {
this.destination.next(everyValueMatch);
this.destination.complete();
};
EverySubscriber.prototype._next = function (value) {
var 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);
}
};
EverySubscriber.prototype._complete = function () {
this.notifyComplete(true);
};
return EverySubscriber;
}(Subscriber));
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