Last updated 2 years ago
Test whether an object looks like a promises-a+ promise
$ npm install is-promise
You can also use it client side via npm.
import isPromise from 'is-promise'; isPromise(Promise.resolve());//=>true isPromise({then:function () {...}});//=>true isPromise(null);//=>false isPromise({});//=>false isPromise({then: true})//=>false
MIT