How do I convert an existing callback API to promises?

I want to work with promises but I have a callback API in a format like: ###1. DOM load or other one time event: window.onload; // set to callback ... window.onload = function() { }; ###2. Plain callback: function request(onChangeHandler) { ... } request(function() { // change happened ... }); ###3. Node style callback ("nodeback"): function getStuff(dat, callback) { ... } getStuff("dataParam", fu

[lesamoureuses]

callback を promise で包んでるところでどうもブロックしちゃってるので読み直してる