54 lines
2.0 KiB
JavaScript
54 lines
2.0 KiB
JavaScript
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import { __assign, __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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if (initWithSelector === void 0) { initWithSelector = {}; }
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var selector = initWithSelector.selector, init = __rest(initWithSelector, ["selector"]);
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return new Observable(function (subscriber) {
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var controller = new AbortController();
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var signal = controller.signal;
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var abortable = true;
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var outerSignal = init.signal;
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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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var outerSignalHandler_1 = function () {
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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_1);
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subscriber.add(function () { return outerSignal.removeEventListener('abort', outerSignalHandler_1); });
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}
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}
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var perSubscriberInit = __assign(__assign({}, init), { signal: signal });
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var handleError = function (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(function (response) {
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if (selector) {
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innerFrom(selector(response)).subscribe(createOperatorSubscriber(subscriber, undefined, function () {
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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 function () {
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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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