@babel/helper-validator-identifier
Advanced tools
Package description
The @babel/helper-validator-identifier npm package is a utility library used by Babel to validate string identifiers according to the ECMAScript specification. It provides functions to determine if a string is a valid identifier name, which is useful when manipulating code in a way that needs to adhere to JavaScript naming conventions.
isValidIdentifier
Checks if a string is a valid ECMAScript identifier name.
const isValid = require('@babel/helper-validator-identifier').isValidIdentifier;
console.log(isValid('validName')); // true
console.log(isValid('123invalid')); // falseisIdentifierStart
Checks if a character code can start an ECMAScript identifier.
const isIdentifierStart = require('@babel/helper-validator-identifier').isIdentifierStart;
console.log(isIdentifierStart('v'.charCodeAt(0))); // true
console.log(isIdentifierStart('1'.charCodeAt(0))); // falseisIdentifierChar
Checks if a character code can be part of an ECMAScript identifier.
const isIdentifierChar = require('@babel/helper-validator-identifier').isIdentifierChar;
console.log(isIdentifierChar('n'.charCodeAt(0))); // true
console.log(isIdentifierChar('!'.charCodeAt(0))); // falseesutils is a utility box for ECMAScript language tools. It includes a keyword check similar to @babel/helper-validator-identifier, but also provides other utilities for AST manipulation and code generation.
jstransform is a simple utility for pluggable JS syntax transforms using the visitor pattern. It includes utilities for identifier validation, but it is more focused on transforming code rather than just validating identifiers.
jscodeshift is a toolkit for running codemods over multiple JavaScript or TypeScript files. It includes utilities for working with identifiers within the context of transforming code, but it is more comprehensive and is designed for writing and applying codemods.
Changelog
v7.24.7 (2024-06-05)
babel-node
babel-traverse
constantViolations with destructuring (@liuxingbaoyu)babel-helper-transform-fixture-test-runner, babel-plugin-proposal-explicit-resource-management
using in switch correctly (@liuxingbaoyu)babel-helpers, babel-runtime-corejs2, babel-runtime-corejs3, babel-runtime
Readme
Validate identifier/keywords name
See our website @babel/helper-validator-identifier for more information.
Using npm:
npm install --save @babel/helper-validator-identifier
or using yarn:
yarn add @babel/helper-validator-identifier
FAQs
Validate identifier/keywords name
The npm package @babel/helper-validator-identifier receives a total of 33,251,304 weekly downloads. As such, @babel/helper-validator-identifier popularity was classified as popular.
We found that @babel/helper-validator-identifier demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 4 open source maintainers collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
Security News
Git dependencies in open source packages can introduce significant risks, including lack of version control, stability issues, dependency drift, and difficulty in auditing, making them potential targets for supply chain attacks.
Security News
Node.js has added experimental support for TypeScript, a move that highlights the growing importance of TypeScript in modern development.
Product
Check out what's new at Socket with our Product Changelog. It tracks all public-facing updates, improvements, and fixes so you can take full advantage of our features.