35 lines
1.2 KiB
JavaScript
35 lines
1.2 KiB
JavaScript
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import { Observable } from '../Observable';
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import { isPromise } from '../util/isPromise';
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import { isArrayLike } from '../util/isArrayLike';
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import { isInteropObservable } from '../util/isInteropObservable';
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import { isIterable } from '../util/isIterable';
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import { fromArray } from './fromArray';
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import { fromPromise } from './fromPromise';
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import { fromIterable } from './fromIterable';
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import { fromObservable } from './fromObservable';
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import { subscribeTo } from '../util/subscribeTo';
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export function from(input, scheduler) {
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if (!scheduler) {
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if (input instanceof Observable) {
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return input;
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}
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return new Observable(subscribeTo(input));
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}
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if (input != null) {
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if (isInteropObservable(input)) {
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return fromObservable(input, scheduler);
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}
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else if (isPromise(input)) {
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return fromPromise(input, scheduler);
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}
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else if (isArrayLike(input)) {
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return fromArray(input, scheduler);
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}
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else if (isIterable(input) || typeof input === 'string') {
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return fromIterable(input, scheduler);
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}
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}
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throw new TypeError((input !== null && typeof input || input) + ' is not observable');
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}
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//# sourceMappingURL=from.js.map
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