Transform Strings to JavaScript Identifiers – to-valid-identifier

The to-valid-identifier JavaScript library takes a string and converts it into a valid JavaScript identifier. This can be helpful if you need to dynamically generate variable names or work with data that might not be formatted correctly.

How to use it:

1. Install the to-valid-identifier package with NPM and import it into your project.

npm install to-valid-identifier

import toValidIdentifier from 'to-valid-identifier';

2. Now you can use the function toValidIdentifier(string) function to convert strings:

//=> 'css'
console.log(toValidIdentifier('css'));
//=> 'css$j$script'
console.log(toValidIdentifier('css-script'));
//=> '$a$'
console.log(toValidIdentifier('$'));
//=> '$_undefined$'
console.log(toValidIdentifier('undefined'));

Changelog:

v1.0.0 (10/14/2025)

• Fix encoding identifiers starting with a number

v0.1.1 (05/28/2024)

• Fix function return type