Check if a string is a valid JavaScript identifier
npm install is-identifierimport isIdentifier from 'is-identifier';
isIdentifier('foo');
//=> true
isIdentifier('1kg');
//=> false
isIdentifier('await'); // Reserved identifier
//=> falseNote
Although globalThis, Infinity, NaN, and undefined are properties of the global object and not identifiers, they are treated as reserved here because they should generally not be used as identifiers.
Returns a boolean for whether the given value is a valid JavaScript identifier.
- to-valid-identifier - Convert a string to a valid JavaScript identifier
- identifier-regex - Regular expression for matching valid JavaScript identifiers
- reserved-identifiers - Provides a list of reserved identifiers for JavaScript
