@u4/stringify-object ✨

Stringify an object/array like JSON.stringify—just without all the double-quotes. A zero-dependency, TypeScript-first fork of [email protected]. The implementation is copied locally (no runtime deps) while preserving the original behavior: handles objects, arrays, Maps/Sets, Dates, Symbols, circular references, and supports transform, filter, indent, singleQuotes, and inlineCharacterLimit options. 🧰

Install

npm install @u4/stringify-object

Usage

import stringifyObject from '@u4/stringify-object';

const input = {foo: 'bar', baz: [1, 2, 3]};
console.log(stringifyObject(input));
// {
//   foo: 'bar',
//   baz: [
//     1,
//     2,
//     3
//   ]
// }

With options:

stringifyObject(new Map([['x', 1]]), {singleQuotes: false, indent: '  '});
// new Map([
//   ["x", 1]
// ])

More examples

Masking fields with transform:

const object = {user: 'becky', password: 'secret'};

const pretty = stringifyObject(object, {
	transform: (obj, property, originalResult) => {
		if (property === 'password') {
			return originalResult.replace(/\w/g, '*');
		}

		return originalResult;
	},
});

console.log(pretty);
/*
{
	user: 'becky',
	password: '******'
}
*/

Inlining small values with inlineCharacterLimit:

const pretty = stringifyObject({
	foo: 'bar',
	arr: [1, 2, 3],
	nested: {hello: 'world'},
}, {
	indent: '  ',
	singleQuotes: false,
	inlineCharacterLimit: 12,
});

console.log(pretty);
/*
{
  foo: "bar",
  arr: [1, 2, 3],
  nested: {
    hello: "world"
  }
}
*/

Circular references are replaced with "[Circular]", and object keys are only quoted when necessary (e.g. {'foo-bar': true}).

Note: I created this project because the original package pulled in 17 extra modules and even crashed my Bun runtime with unused code. This fork keeps everything inline and dependency-free.

Comparison

| Metric | @u4/stringify-object | stringify-object | | --- | --- | --- | | node_modules size | ~32 KB | ~1.2 MB | | Entries (files + folders) | ~12 | ~275 | | Reduction vs original | ~37x smaller, ~21x fewer files 🪶 | baseline 🐘 | | Typings | ✅ built-in | ⚠️ needs @types/stringify-object |