enable

Detect es6 and es7 features enable or not.

Install

$ npm install enable --save

Usage

var enable = require('enable');

if (enable.<feature>) {
  console.log(<feature> is supported);
}

/* Example:
if (enable.generator) {
  console.log('supports generator: `function* a() {}`');
}
*/

List of features:

Object related:

• Object.is
• Object.assign
• Object.getOwnPropertySymbols
• Object.setPrototypeOf

String realted:

• String.raw
• String.fromCodePoint
• String.prototype.codePointAt
• String.prototype.normalize
• String.prototype.repeat
• String.prototype.startsWith
• String.prototype.endsWith
• String.prototype.contains

Number realted:

• Number.isFinite
• Number.isInteger
• Number.isSafeInteger
• Number.isNaN
• Number.EPSILON
• Number.MIN_SAFE_INTEGER

Math realted:

• Math.clz32
• Math.imul
• Math.sign
• Math.log10
• Math.log2
• Math.log1p
• Math.expm1
• Math.cosh
• Math.sinh
• Math.tanh
• Math.acosh
• Math.asinh
• Math.atanh
• Math.hypot
• Math.trunc
• Math.fround
• Math.cbrt

Others:

• generator
• let
• const

Test

$ npm install
$ npm test

Coverage

$ npm test-cov