Awesome

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is-promise

Test whether an object looks like a promises-a+ promise

Installation

$ npm install is-promise

You can also use it client side via npm.

API

import isPromise from 'is-promise';

isPromise(Promise.resolve());//=>true
isPromise({then:function () {...}});//=>true
isPromise(null);//=>false
isPromise({});//=>false
isPromise({then: true})//=>false

License

MIT