Can I generate TypeScript constants with `as const`?

Yes! Toggle the `as const` assertion option to create immutable, deeply read-only TypeScript constants.

JSON to JavaScript

Convert raw JSON into JavaScript const object declarations.

JSON Tools

JSON to JavaScript Object Converter

INPUT JSON OBJECT0 chars

JAVASCRIPT OBJECT DECLARATION

Code declaration will appear here...

About JSON to JavaScript

The JSON to JavaScript Object Converter converts raw JSON strings into native JavaScript object literals, ES Module exports (`export const data = {...}`), CommonJS modules (`module.exports`), and clean JS variables with unquoted valid keys.

Step-by-Step Guide

How to Use JSON to JavaScript

Step 1

Paste your JSON string into the editor.

Step 2

Select module format (ESM, CJS, Variable).

Step 3

Choose variable name and quote styling.

Step 4

Click "Copy JavaScript".

Industry Scenarios

Practical Use Cases for JSON to JavaScript

Mock Data & Unit Test Fixtures

Convert JSON test data into native JavaScript/TypeScript constant objects for Jest, Vitest, and Cypress test suites.

Configuration File Refactoring

Convert static JSON configuration files into interactive JavaScript module scripts with function support.

Sample Data & Transformation

Input & Output Examples

Converting JSON to ES Module Object

Input Sample:

{"appName": "RenderXD", "version": 1.0, "debug": false}

Processed Result:

export const config = {\n  appName: "RenderXD",\n  version: 1.0,\n  debug: false\n};

Technical Capabilities

Key Features & Performance

✓Exports as ES Module (`export default`), Named Export (`export const`), CommonJS, or raw JS Object.
✓Strips unnecessary quotes from valid JavaScript identifier keys.
✓Supports trailing commas and single/double quote preferences.
✓100% Client-Side memory execution.
✓1-Click Copy JavaScript code.

Technical Glossary

Key Terminology & Definitions

JavaScript Object Literal

A comma-separated list of name-value pairs wrapped in curly braces defining a JavaScript object instance.

Identifier Unquoting

Removing redundant double quotes from JSON property names that match valid JavaScript identifier rules (e.g. `"name"` -> `name`).

Frequently Asked Questions (PAA)

JSON to JavaScript FAQs

JSON is a strict text serialization format where keys must be double-quoted strings and functions are prohibited. JavaScript objects are runtime memory structures that allow methods, unquoted keys, and dynamic values.