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enable

NPM version build status Test coverage Gittip David deps node version npm download

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