reserved-words
Advanced tools
Tiny package for detecting reserved words.
Reserved Word is either a Keyword, or a Future Reserved Word, or a Null Literal, or a Boolean Literal.
See: ES5 #7.6.1 and
ES6 #11.6.2.
npm install reserved-words
Returns true if provided identifier string is a Reserved Word
in some ECMAScript dialect (ECMA-262 edition).
If the strict flag is truthy, this function additionally checks whether
word is a Keyword or Future Reserved Word under strict mode.
var reserved = require('reserved-words');
reserved.check('volatile', 'es3'); // true
reserved.check('volatile', 'es2015'); // false
reserved.check('yield', 3); // false
reserved.check('yield', 6); // true
Represents ECMA-262 3rd edition.
See section 7.5.1.
Represents ECMA-262 5th edition (ECMAScript 5.1).
Reserved Words are formally defined in ECMA262 sections 7.6.1.1 and 7.6.1.2.
Represents [ECMA-262 6th edition](ECMAScript 2015).
Reserved Words are formally defined in sections 11.6.2.1 and 11.6.2.2.
Licensed under The MIT License
Esprima is a high-performance, standard-compliant ECMAScript parser. It can be used to parse JavaScript code and analyze its syntax, including checking for reserved words. Compared to 'reserved-words', Esprima offers a broader range of functionalities for parsing and analyzing JavaScript code.
Acorn is a small, fast, JavaScript-based ECMAScript parser. It can be used to parse JavaScript code and check for reserved words as part of its syntax analysis. Acorn is similar to Esprima but is designed to be faster and more modular.
FAQs
ECMAScript reserved words checker
We found that reserved-words demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer 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.
Research
Five malicious NuGet packages impersonate Chinese .NET libraries to deploy a stealer targeting browser credentials, crypto wallets, SSH keys, and local files.
Security News
pnpm 11 turns on a 1-day Minimum Release Age and blocks exotic subdeps by default, adding safeguards against fast-moving supply chain attacks.
Security News
The remediated findings include organization permission bugs, stale project access after transfers, OIDC replay edge cases, audit logging gaps, and an IDOR in API token deletion.