/** | |
* Tests to see if the object is an ES2015 (ES6) Promise | |
* @see {@link https://www.ecma-international.org/ecma-262/6.0/#sec-promise-objects} | |
* @param value the object to test | |
*/ | |
export function isPromise(value: any): value is PromiseLike<any> { | |
return !!value && typeof (<any>value).subscribe !== 'function' && typeof (value as any).then === 'function'; | |
} |