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60 lines
2.3 KiB
JavaScript
60 lines
2.3 KiB
JavaScript
/** PURE_IMPORTS_START tslib,_Subscriber PURE_IMPORTS_END */
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import * as tslib_1 from "tslib";
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import { Subscriber } from '../Subscriber';
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export function find(predicate, thisArg) {
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if (typeof predicate !== 'function') {
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throw new TypeError('predicate is not a function');
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}
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return function (source) { return source.lift(new FindValueOperator(predicate, source, false, thisArg)); };
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}
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var FindValueOperator = /*@__PURE__*/ (function () {
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function FindValueOperator(predicate, source, yieldIndex, thisArg) {
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this.predicate = predicate;
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this.source = source;
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this.yieldIndex = yieldIndex;
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this.thisArg = thisArg;
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}
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FindValueOperator.prototype.call = function (observer, source) {
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return source.subscribe(new FindValueSubscriber(observer, this.predicate, this.source, this.yieldIndex, this.thisArg));
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};
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return FindValueOperator;
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}());
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export { FindValueOperator };
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var FindValueSubscriber = /*@__PURE__*/ (function (_super) {
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tslib_1.__extends(FindValueSubscriber, _super);
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function FindValueSubscriber(destination, predicate, source, yieldIndex, thisArg) {
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var _this = _super.call(this, destination) || this;
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_this.predicate = predicate;
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_this.source = source;
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_this.yieldIndex = yieldIndex;
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_this.thisArg = thisArg;
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_this.index = 0;
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return _this;
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}
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FindValueSubscriber.prototype.notifyComplete = function (value) {
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var destination = this.destination;
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destination.next(value);
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destination.complete();
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this.unsubscribe();
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};
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FindValueSubscriber.prototype._next = function (value) {
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var _a = this, predicate = _a.predicate, thisArg = _a.thisArg;
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var index = this.index++;
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try {
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var result = predicate.call(thisArg || this, value, index, this.source);
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if (result) {
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this.notifyComplete(this.yieldIndex ? index : value);
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}
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}
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catch (err) {
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this.destination.error(err);
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}
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};
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FindValueSubscriber.prototype._complete = function () {
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this.notifyComplete(this.yieldIndex ? -1 : undefined);
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};
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return FindValueSubscriber;
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}(Subscriber));
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export { FindValueSubscriber };
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//# sourceMappingURL=find.js.map
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