Uncaught TypeError: Cannot read property 'canvas' of undefined

I’m getting a TypeError

html2canvas.js:2264 Uncaught TypeError: Cannot read property 'canvas' of undefined
    at html2canvas (html2canvas.js:2264)
    at demo.html:176

while trying to call

html2canvas(document.body).then(function(canvas) {
    document.body.appendChild(canvas);
});

as described in the documentation

[niklasvh]

Neither of those are stable yet. Releases can be found under https://github.com/niklasvh/html2canvas/releases or npm

[niklasvh]

For contributing, the master branch is the way to go as the whole library has been rewritten