source: node_modules/traverse/test/stringify.js

'use strict';

var test = require('tape');
var traverse = require('../');

test('stringify', function (t) {
        var obj = [5, 6, -3, [7, 8, -2, 1], { f: 10, g: -13 }];

        var s = '';
        traverse(obj).forEach(function (node) {
                if (Array.isArray(node)) {
                        this.before(function () { s += '['; });
                        this.post(function (child) {
                                if (!child.isLast) { s += ','; }
                        });
                        this.after(function () { s += ']'; });
                } else if (typeof node === 'object') {
                        this.before(function () { s += '{'; });
                        this.pre(function (x, key) {
                                s += '"' + key + '":';
                        });
                        this.post(function (child) {
                                if (!child.isLast) { s += ','; }
                        });
                        this.after(function () { s += '}'; });
                } else if (typeof node === 'function') {
                        s += 'null';
                } else {
                        s += node.toString();
                }
        });

        t.equal(s, JSON.stringify(obj));
        t.end();
});