CheckPromise

Sync check promise status. But core of CheckPromise is written by c++.

Motivation

node.js haven't expose one way to check a promise status. Although some trick can check promise status, that always are async way.

In addition, some monkey patch change promise constructor. you can't use instanceof to check a object whether is a promise.and more,like zone.js,although change promise constructor, the promise.then always return a promise maked by native Promise.This moment,you must use unconventional way to check.

Usages

sync

cp.checkPromise(Promise.resolve()) 

async

cp.checkPromiseAsync(Promise.resolve).then(status => {
    if(...)
})

isPromise

cp.isPromise(Promise.resolve)

Installation

yarn add checkPromise