json-stable-stringify-without-jsonify/example/key_cmp.js

deterministic JSON.stringify() with custom sorting to get deterministic hashes from stringified results, with no public domain dependencies

var stringify = require('../');

var obj = { c: 8, b: [{z:6,y:5,x:4},7], a: 3 };
var s = stringify(obj, function (a, b) {
    return a.key < b.key ? 1 : -1;
});
console.log(s);