jsonize-loudfail v0.1.0

jsonize-loudfail

A serializer for JSON.stringify that throws in case of data loss.

Usage

from test.usage.js:

var jsonizeLoudfail = require('jsonize-loudfail'), data;

data = [ 42, 23, 5 ];
function toJSON() { return jsonizeLoudfail(data, null, 2); }
equal(toJSON(), '[\n  42,\n  23,\n  5\n]');

data.foo = true;
data['011'] = 11;
equal.err(toJSON, 'Error: Un-JSON-able array properties: "foo", "011"');

data = {};
equal(toJSON(), '{}');
data.foo = toJSON;
equal.err(toJSON,
  'Error: Slot "foo": Un-JSON-able function: function toJSON() {…}');
data.foo = undefined;
equal.err(toJSON, 'Error: Slot "foo": Un-JSON-able undefined');

data = Object.create(null);
data.foo = 23;
equal(toJSON(), '{\n  "foo": 23\n}');

data = new Date(0);
equal.err(toJSON, 'Error: Date would be converted to string');
data = { epoch: new Date(0) };
equal.err(toJSON, 'Error: Slot "epoch": Date would be converted to string');

data = { rgx: /$/g };
equal.err(toJSON, 'Error: Slot "rgx": Un-JSON-able {RegExp}: /$/g');

Known issues

• needs more/better tests and docs

License

ISC