Allow custom source-map location

[icedtoast]

Can an option(s) be added to:
a) Place sourcemaps in a separate folder in the output directory? (e.g. output/dist.js , output/sourcemaps/dist.js.map )
b) Customize the url used to refer to sourcemaps? So that they can be served from an internal-only host.

[evanw]

I believe this should already be straightforward to do. Use write: false to return an array of output files along with sourcemap: 'external' so sourceMappingURL comments are not already added. Then write some code to place the .map files wherever you want and to append sourceMappingURL comments to the corresponding source files with the correct location. This approach is not that much code and should already more flexible than providing an option within esbuild itself, so I'm not currently planning on adding this to esbuild's official API.

[EloB]

Is there a simple way to only output the same name as the file itself? I have multiple entrypoints and using entryNames with object (in/out).

Current behaviour

//# sourceMappingURL=/EndpointGet/app.mjs.map

Wanted behaviour

//# sourceMappingURL=app.mjs.map

AFAIK the only way to archive this is either with plugins or footer but that works bad with splitting.