name : isInteropObservable.ts import { InteropObservable } from '../types'; import { observable as Symbol_observable } from '../symbol/observable'; import { isFunction } from './isFunction'; /** Identifies an input as being Observable (but not necessary an Rx Observable) */ export function isInteropObservable(input: any): input is InteropObservable<any> { return isFunction(input[Symbol_observable]); }