reserved-words


What is it?

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.

Installation

``
npm install reserved-words
`

API

$3

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.

#### Example

`
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
``

$3

#### es3 (or 3)

Represents ECMA-262 3rd edition.

See section 7.5.1.

#### es5 (or 5)

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.

#### es2015 (or es6, 6)

Represents ECMA-262 6th edition.

Reserved Words are formally defined in sections
11.6.2.1 and
11.6.2.2.

$3

Licensed under The MIT License