hugoWebsite/node_modules/rxjs/dist/esm5/internal/operators/take.js

20 lines
689 B
JavaScript

import { EMPTY } from '../observable/empty';
import { operate } from '../util/lift';
import { createOperatorSubscriber } from './OperatorSubscriber';
export function take(count) {
return count <= 0
?
function () { return EMPTY; }
: operate(function (source, subscriber) {
var seen = 0;
source.subscribe(createOperatorSubscriber(subscriber, function (value) {
if (++seen <= count) {
subscriber.next(value);
if (count <= seen) {
subscriber.complete();
}
}
}));
});
}
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