promise-once
1.0.2 • Public • Published promise-once 
Wrap a promise constructor to return the same promise everytime.
It's once for promises.
npm install promise-once --save
Usage
var i = 0;
var incrementOnce = require('promise-once')(increment);
incrementOnce()
.then(incrementOnce)
.then(incrementOnce)
.then(incrementOnce)
.then(incrementOnce)
.then(incrementOnce)
.then(console.log)
function increment() {
i++;
}
Default is to use promise but you can pass your shim along:
var promiseOnce = require('promise-once');
promiseOnce.Promise = require('es6-promise');
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