Check if some keyword is reserved in Javascript. It supports all ECMAScript versions
npm install is-reservedIf your're wondering if some name is reserved in Javascript, make it sure by checking it out with is-reserved. It supports from ECMASCript 1 until ECMAScript 6 and even the ECMAScript 7 draft.
``bash`
$ npm install is-reservedor set it up globally
$ npm install is-reserved --global
is-reserved was made to run right away from your terminal
`bash`
$ is-reserved delete
You may specify the ECMAScript version with the option --es
`bash`
$ is-reserved delete --es6
For other options, just type $ is-reserved help
It is also possible to use it programatically:
` js
import isReserved from 'is-reserved';
console.log('is delete reserved on latest ECMAScript Version?', isReserved.check('delete'));
console.log('is delete reserved on ES6?', isReserved.check('delete', isReserved.ES6));
console.log('is delete reserved on ES2?', isReserved.check('delete', isReserved.ES2));
// List all reserved keywords for ES5
console.log(isReserved.keywords[isReserved.ES5]);
`
```
npm run test
MIT