58 lines
2.2 KiB
JavaScript
58 lines
2.2 KiB
JavaScript
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import { innerFrom } from '../observable/innerFrom';
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import { executeSchedule } from '../util/executeSchedule';
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import { createOperatorSubscriber } from './OperatorSubscriber';
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export function mergeInternals(source, subscriber, project, concurrent, onBeforeNext, expand, innerSubScheduler, additionalFinalizer) {
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const buffer = [];
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let active = 0;
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let index = 0;
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let isComplete = false;
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const checkComplete = () => {
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if (isComplete && !buffer.length && !active) {
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subscriber.complete();
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}
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};
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const outerNext = (value) => (active < concurrent ? doInnerSub(value) : buffer.push(value));
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const doInnerSub = (value) => {
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expand && subscriber.next(value);
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active++;
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let innerComplete = false;
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innerFrom(project(value, index++)).subscribe(createOperatorSubscriber(subscriber, (innerValue) => {
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onBeforeNext === null || onBeforeNext === void 0 ? void 0 : onBeforeNext(innerValue);
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if (expand) {
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outerNext(innerValue);
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}
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else {
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subscriber.next(innerValue);
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}
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}, () => {
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innerComplete = true;
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}, undefined, () => {
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if (innerComplete) {
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try {
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active--;
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while (buffer.length && active < concurrent) {
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const bufferedValue = buffer.shift();
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if (innerSubScheduler) {
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executeSchedule(subscriber, innerSubScheduler, () => doInnerSub(bufferedValue));
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}
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else {
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doInnerSub(bufferedValue);
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}
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}
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checkComplete();
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}
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catch (err) {
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subscriber.error(err);
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}
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}
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}));
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};
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source.subscribe(createOperatorSubscriber(subscriber, outerNext, () => {
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isComplete = true;
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checkComplete();
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}));
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return () => {
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additionalFinalizer === null || additionalFinalizer === void 0 ? void 0 : additionalFinalizer();
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};
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}
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//# sourceMappingURL=mergeInternals.js.map
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