is-identifier

Check if a string is a valid JavaScript identifier

MIT 2 个版本

identifier keyword word check test reserved javascript ecmascript variable function property is valid

安装

npm install is-identifier

yarn add is-identifier

pnpm add is-identifier

bun add is-identifier

README

is-identifier

Check if a string is a valid JavaScript identifier

Install

npm install is-identifier

Usage

import isIdentifier from 'is-identifier';

isIdentifier('foo');
//=> true

isIdentifier('1kg');
//=> false

isIdentifier('await'); // Reserved identifier
//=> false

[!NOTE] 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.

API

isIdentifier(value)

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

版本列表

1.0.1 2024-07-12

1.0.0 2024-05-05