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