It's difference between native and shim
Author: david-niCreated May 4, 2018Updated May 8, 2018
when I run the following code in browser（chrome v66） that support promise native
let promiseA = new Promise(function(resolve){ resolve('A') }),
promiseB = new Promise(function(resolve){ resolve(promiseA) }),
promiseC = new Promise(function(resolve){ resolve('C') });
promiseB.then((arg)=>{ console.log(arg); });
promiseC.then((arg)=>{ console.log(arg); });the result is C A
but when I run the same code with es6-promise，the result is reverse: A C
which one is right?
Source: stefanpenner/es6-promise