Opal-Estate-Pro/node_modules/rxjs/_esm2015/operators/shareReplay.js
2019-09-13 11:27:52 +07:00

43 lines
1.3 KiB
JavaScript
Executable File

import { ReplaySubject } from '../ReplaySubject';
/**
* @method shareReplay
* @owner Observable
*/
export function shareReplay(bufferSize, windowTime, scheduler) {
return (source) => source.lift(shareReplayOperator(bufferSize, windowTime, scheduler));
}
function shareReplayOperator(bufferSize, windowTime, scheduler) {
let subject;
let refCount = 0;
let subscription;
let hasError = false;
let isComplete = false;
return function shareReplayOperation(source) {
refCount++;
if (!subject || hasError) {
hasError = false;
subject = new ReplaySubject(bufferSize, windowTime, scheduler);
subscription = source.subscribe({
next(value) { subject.next(value); },
error(err) {
hasError = true;
subject.error(err);
},
complete() {
isComplete = true;
subject.complete();
},
});
}
const innerSub = subject.subscribe(this);
return () => {
refCount--;
innerSub.unsubscribe();
if (subscription && refCount === 0 && isComplete) {
subscription.unsubscribe();
}
};
};
}
;
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