Return a deterministic stringified string str from the object obj.
options
cmp
If opts is given, you can supply an opts.cmp to have a custom comparison function for object keys. Your function opts.cmp is called with these parameters:
For example, to sort on the object key names in reverse order you could write:
var stringify =require('json-stable-stringify');var obj = { c:8, b: [{z:6,y:5,x:4},7], a:3 };var s =stringify(obj,function (a, b) {returna.key <b.key ?1:-1;});console.log(s);
which results in the output string:
{"c":8,"b":[{"z":6,"y":5,"x":4},7],"a":3}
Or if you wanted to sort on the object values in reverse order, you could write:
var stringify = require('json-stable-stringify');
var obj = { d: 6, c: 5, b: [{z:3,y:2,x:1},9], a: 10 };
var s = stringify(obj, function (a, b) {
return a.value < b.value ? 1 : -1;
});
console.log(s);
which outputs:
{"d":6,"c":5,"b":[{"z":3,"y":2,"x":1},9],"a":10}
space
If you specify opts.space, it will indent the output for pretty-printing. Valid values are strings (e.g. {space: \t}) or a number of spaces ({space: 3}).
For example:
var obj = { b:1, a: { foo:'bar', and: [1,2,3] } };var s =stringify(obj, { space:' ' });console.log(s);