CFWorkers / Oxygen support

[frehner]

Hello, I'm testing this out in a Cloudflare Workers-like environment (Oxygen 🙂 ) and unfortunately Buffer isn't supported there. I receive the error:

Error: Buffer is not globally defined in this environment. Consider setting useTArray to true
at Object.format [as jpg] (/node_modules/jpeg-js/lib/decoder.js:1141:15)

The good news is, if I only work with jpgs, I can modify this line

get-pixels/src/get-pixels.ts

Line 41 in 7b07485

return decoders[format](imageData);

to the following code

decoders[format](imageData, {useTArray: true});

which bypasses using a Buffer and uses Uint8Array directly, which is supported in CFWorkers! Docs on that option https://github.com/jpeg-js/jpeg-js#decode-options

So somehow I need the ability to pass that useTArray option to jpeg-js and thing seem to work from there. (For jpegs at least. I don't think they work for pngs, but I'm haven't looked into that, yet.)

[ascorbic]

I think this should work now, for both JPEG (because of the useTArray trick) and PNG because it shims global Buffer with an import from "node:buffer". This should work on most edge runtimes now.