bindCallbackInternals.js•2.32 kB
import { isScheduler } from '../util/isScheduler';
import { Observable } from '../Observable';
import { subscribeOn } from '../operators/subscribeOn';
import { mapOneOrManyArgs } from '../util/mapOneOrManyArgs';
import { observeOn } from '../operators/observeOn';
import { AsyncSubject } from '../AsyncSubject';
export function bindCallbackInternals(isNodeStyle, callbackFunc, resultSelector, scheduler) {
if (resultSelector) {
if (isScheduler(resultSelector)) {
scheduler = resultSelector;
}
else {
return function (...args) {
return bindCallbackInternals(isNodeStyle, callbackFunc, scheduler)
.apply(this, args)
.pipe(mapOneOrManyArgs(resultSelector));
};
}
}
if (scheduler) {
return function (...args) {
return bindCallbackInternals(isNodeStyle, callbackFunc)
.apply(this, args)
.pipe(subscribeOn(scheduler), observeOn(scheduler));
};
}
return function (...args) {
const subject = new AsyncSubject();
let uninitialized = true;
return new Observable((subscriber) => {
const subs = subject.subscribe(subscriber);
if (uninitialized) {
uninitialized = false;
let isAsync = false;
let isComplete = false;
callbackFunc.apply(this, [
...args,
(...results) => {
if (isNodeStyle) {
const err = results.shift();
if (err != null) {
subject.error(err);
return;
}
}
subject.next(1 < results.length ? results : results[0]);
isComplete = true;
if (isAsync) {
subject.complete();
}
},
]);
if (isComplete) {
subject.complete();
}
isAsync = true;
}
return subs;
});
};
}
//# sourceMappingURL=bindCallbackInternals.js.map