downloaded file does not have any extension

[praneshsingha]

used in php
Canvas2Image.saveAsPNG(canvas); does not save image as png, it just downloads the file without any extension but it download a excellent image including every css design

[JonathanTreffler]

I created a fork, that uses ES6 modules and fixes this issue: https://github.com/TessyPowder/canvas2image-2