26 lines
No EOL
978 B
JavaScript
26 lines
No EOL
978 B
JavaScript
import { operate } from '../util/lift';
|
|
import { createOperatorSubscriber } from './OperatorSubscriber';
|
|
export function refCount() {
|
|
return operate((source, subscriber) => {
|
|
let connection = null;
|
|
source._refCount++;
|
|
const refCounter = createOperatorSubscriber(subscriber, undefined, undefined, undefined, () => {
|
|
if (!source || source._refCount <= 0 || 0 < --source._refCount) {
|
|
connection = null;
|
|
return;
|
|
}
|
|
const sharedConnection = source._connection;
|
|
const conn = connection;
|
|
connection = null;
|
|
if (sharedConnection && (!conn || sharedConnection === conn)) {
|
|
sharedConnection.unsubscribe();
|
|
}
|
|
subscriber.unsubscribe();
|
|
});
|
|
source.subscribe(refCounter);
|
|
if (!refCounter.closed) {
|
|
connection = source.connect();
|
|
}
|
|
});
|
|
}
|
|
//# sourceMappingURL=refCount.js.map
|