/** prettier */
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import { Observable } from '../Observable';
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import { isFunction } from './isFunction';
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/**
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* Tests to see if the object is an RxJS {@link Observable}
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* @param obj the object to test
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*/
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export function isObservable(obj: any): obj is Observable<unknown> {
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// The !! is to ensure that this publicly exposed function returns
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// `false` if something like `null` or `0` is passed.
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return !!obj && (obj instanceof Observable || (isFunction(obj.lift) && isFunction(obj.subscribe)));
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}
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