Nodejs - Convert a '{a:1}'-style string (generated by `util.format()`) into an objects

Question

Nodejs - Convert a '{a:1}'-style string (generated by `util.format()`) into an objects

util.format() generates '{a:1}'-style strings which are not valid JSON. (Note that keys are not surrounded by double quotes.) How to convert this kind of strings back into objects?

javascript
node.js

Answer 1

Use eval if it's definitely trustworthy:

eval('(' + str + ')');

Answer 2

Unless you have a very good reason not to, you should be using JSON.stringify() to convert an object to a string and JSON.parse() to reconstitute an object back from a string.