| 1 | import { AsyncIterableX } from './asynciterablex';
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| 2 | import { isIterable, isAsyncIterable, isArrayLike, isObservable, isPromise } from '../util/isiterable';
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| 3 | import { identityAsync } from '../util/identity';
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| 4 | import { FromObservableAsyncIterable, FromPromiseIterable, FromAsyncIterable, FromArrayIterable } from './from';
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| 5 |
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| 6 | export function as(source) {
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| 7 | if (source instanceof AsyncIterableX) {
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| 8 | return source;
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| 9 | }
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| 10 | if (typeof source === 'string') {
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| 11 | return new FromArrayIterable([source], identityAsync);
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| 12 | }
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| 13 | if (isIterable(source) || isAsyncIterable(source)) {
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| 14 | return new FromAsyncIterable(source, identityAsync);
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| 15 | }
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| 16 | if (isPromise(source)) {
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| 17 | return new FromPromiseIterable(source, identityAsync);
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| 18 | }
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| 19 | if (isObservable(source)) {
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| 20 | return new FromObservableAsyncIterable(source, identityAsync);
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| 21 | }
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| 22 | if (isArrayLike(source)) {
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| 23 | return new FromArrayIterable(source, identityAsync);
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| 24 | }
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| 25 | return new FromArrayIterable([source], identityAsync);
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| 26 | }
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| 27 |
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| 28 |
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