22 lines
807 B
Plaintext
22 lines
807 B
Plaintext
import { operate } from '../util/lift';
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import { createOperatorSubscriber } from './OperatorSubscriber';
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export function find(predicate, thisArg) {
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return operate(createFind(predicate, thisArg, 'value'));
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}
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export function createFind(predicate, thisArg, emit) {
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const findIndex = emit === 'index';
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return (source, subscriber) => {
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let index = 0;
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source.subscribe(createOperatorSubscriber(subscriber, (value) => {
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const i = index++;
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if (predicate.call(thisArg, value, i, source)) {
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subscriber.next(findIndex ? i : value);
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subscriber.complete();
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}
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}, () => {
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subscriber.next(findIndex ? -1 : undefined);
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subscriber.complete();
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}));
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};
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}
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//# sourceMappingURL=find.js.map |