Image data: Uint8Array, Uint8ClampedArray or Buffer expected.

[IamMille]

In the Node.js example, it seems like the const diff = new PNG({width, height}); returns a stream, hence the error.

[mourner]

That stream also has a data property (per pngjs docs), so the example works as expected.

pixelmatch(img1.data, img2.data, diff.data, width, height, {threshold: 0.1});

[mourner]

@gsouf 🤷‍♂️ you could submit an issue to pngjs, but their docs are clear: https://github.com/lukeapage/pngjs#pngsyncreadbuffer

[gsouf]

@mourner sorry I just made something wrong and because I found this 3 days old issue I just assumed there was a recent bug