53 lines
1.9 KiB
JavaScript
53 lines
1.9 KiB
JavaScript
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import { __rest } from "tslib";
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import { createOperatorSubscriber } from '../../operators/OperatorSubscriber';
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import { Observable } from '../../Observable';
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import { innerFrom } from '../../observable/innerFrom';
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export function fromFetch(input, initWithSelector = {}) {
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const { selector } = initWithSelector, init = __rest(initWithSelector, ["selector"]);
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return new Observable((subscriber) => {
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const controller = new AbortController();
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const { signal } = controller;
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let abortable = true;
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const { signal: outerSignal } = init;
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if (outerSignal) {
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if (outerSignal.aborted) {
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controller.abort();
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}
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else {
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const outerSignalHandler = () => {
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if (!signal.aborted) {
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controller.abort();
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}
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};
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outerSignal.addEventListener('abort', outerSignalHandler);
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subscriber.add(() => outerSignal.removeEventListener('abort', outerSignalHandler));
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}
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}
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const perSubscriberInit = Object.assign(Object.assign({}, init), { signal });
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const handleError = (err) => {
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abortable = false;
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subscriber.error(err);
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};
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fetch(input, perSubscriberInit)
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.then((response) => {
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if (selector) {
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innerFrom(selector(response)).subscribe(createOperatorSubscriber(subscriber, undefined, () => {
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abortable = false;
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subscriber.complete();
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}, handleError));
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}
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else {
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abortable = false;
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subscriber.next(response);
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subscriber.complete();
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}
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})
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.catch(handleError);
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return () => {
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if (abortable) {
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controller.abort();
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}
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};
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});
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}
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//# sourceMappingURL=fetch.js.map
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