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js-syntax-detector

v1.0.11

Published

A JavaScript newer syntax(ES6+) detector, Only focused on **lexical** syntax, not APIs. Because new lexical syntax will cause SyntaxError, it breaks your code, and cannot caught. while the APIs may not, it can be polyfilled or caught.

Vulnerabilities

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Links

Git

Maintainers

keeliikeelii

Keywords

jssyntaxdetector

Readme

JavaScript syntax detector

A JavaScript newer syntax(ES6+) detector, Only focused on lexical syntax, not APIs. Because new lexical syntax will cause SyntaxError, it breaks your code, and cannot caught. while the APIs may not, it can be polyfilled or caught.

check it online js-syntax.

YES:

  • new token(=?)
  • new keywords(yield, await)
  • new operators(**)
  • new literals(template literals)
  • ...

NO:

  • Promise
  • globalThis
  • Array.prototype.API
  • Map/Set/WeakMap/WeakSet
  • ...

screenshots

Image

CLI tool

Darwin

curl -o js-syntax  https://unpkg.com/[email protected]/bin/darwin/js-syntax
chmod +x js-syntax
./js-syntax --help

Linux(x86_64)

curl -o js-syntax  https://unpkg.com/[email protected]/bin/linux/js-syntax
chmod +x js-syntax
./js-syntax --help

Use it in your project

npm install -g js-syntax-detector