is-canvas-context

varify a variable is a canvas context

Installation

Download node at nodejs.org and install it, if you haven't already.

npm install is-canvas-context --save

Usage

import isCanvasContext from './'
 
let canvas = document.createElement('canvas')
 
isCanvasContext(canvas) // false
isCanvasContext(canvas.getContext('2d')) // true
isCanvasContext('not a context or canvas') // false

API

isCanvasContext(ctx:any):boolean

License

ISC