[Feature]: output.assetPrefix support to configure different values according to different types

[chenjinxinlove]

What problem does this feature solve?

output.assetPrefix now supports configuring only one value, but sometimes the cnd address of js and the cnd address of an image are different. Different cdn prefixes need to be configured according to different types.

What does the proposed API look like?

output:{
assetPrefix: {
js: 'cdn1',
css: 'cdn1',
image: 'cdn2'
}
}

[chenjiahan]

We can not implement this feature yet, because the output.publicPath option of Rspack only accept a string value. see https://rspack.dev/config/output#outputpublicpath.

If Rspack supports output.publicPath to be a function, then Rsbuild can provide a more flexible assetPrefix config.

Can you submit an issue for Rspack to support output.publicPath function first? ❤️

https://github.com/web-infra-dev/rspack/issues