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37 lines
1.0 KiB
37 lines
1.0 KiB
4 years ago
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var assert = require('assert');
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var Traverse = require('traverse');
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exports.stringify = function () {
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var obj = [ 5, 6, -3, [ 7, 8, -2, 1 ], { f : 10, g : -13 } ];
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var s = '';
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Traverse(obj).forEach(function (node) {
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if (Array.isArray(node)) {
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this.before(function () { s += '[' });
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this.post(function (child) {
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if (!child.isLast) s += ',';
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});
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this.after(function () { s += ']' });
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}
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else if (typeof node == 'object') {
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this.before(function () { s += '{' });
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this.pre(function (x, key) {
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s += '"' + key + '"' + ':';
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});
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this.post(function (child) {
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if (!child.isLast) s += ',';
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});
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this.after(function () { s += '}' });
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}
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else if (typeof node == 'function') {
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s += 'null';
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}
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else {
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s += node.toString();
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}
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});
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assert.equal(s, JSON.stringify(obj));
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}
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