key-mirror Takes in a {key1:val1...keyn:valn} and returns {key1:key1,keyn:keyn} ala Reacts keyMirror. /** quick usage */ var keyMirror = require('key-mirror'); var ACTIONS = keyMirror({ UPDATE:null,DELETE:null,ADD:null}); //ACTIONS.UPDATE === 'UPDATE' //ACTIONS.DELETE === 'DELETE'//ACTIONS.ADD === 'ADD'