motivation example isn't 100% right

[AugustinMauroy]

for "backend" part (node, deno, bun) because they all support node:fs so it's can be simplified by

if (typeof process !== 'undefined') {
    const fs = await import('node:fs/promises');
    const bytes = await fs.readFile('./foo.jpeg');

    console.log('File size:', bytes.length, 'bytes');
} else if (typeof window !== 'undefined') {
    const response = await fetch('./foo.jpeg');
    const bytes = await response.bytes();

    console.log('File size:', bytes.byteLength, 'bytes');
}

[styfle]

It’s true that they later added support for Node.js APIs because there was no JavaScript standard, but you would need to duck type to support older versions of those runtimes. So the example is still relevant if you need to support older versions.

Perhaps I should add an example with Porffor too since I know it doesn’t support Node.js APIs. A cursory look seemed like it didn’t support duck typing.

But yeah, the bigger motivation here is browsers and bundlers and that problem still exists today.

[AugustinMauroy]

Yeah it's can be useful for a lib that can be used enywhere

https://jsr.io/@am/neuralnetwork/doc/~/Model#method_load_0 here for example you it's ask a string to parse