js/util/_HTMLCanvasElement.js
'use strict'
/*global HTMLCanvasElement*/
let _HTMLCanvasElement = null
if(typeof HTMLCanvasElement !== 'undefined'){
_HTMLCanvasElement = HTMLCanvasElement
}else{
class HTMLCanvasElement {
getContext(name, opt) {
throw new Error('getContext is not implemented')
}
}
_HTMLCanvasElement = HTMLCanvasElement
}
export default _HTMLCanvasElement