Capture output

[arcanis]

It would be useful to have a way to catch the warnings and errors to operate on them. At the moment we can't pass a stdout stream to the esbuild function, so it's difficult to redirect it anywhere.

[evanw]

I'm assuming you are talking about the JavaScript API. This is possible by setting logLevel: 'silent' and then using the returned warnings and errors properties. If you're talking about the CLI instead, they are printed to stderr instead of stdout.

[arcanis]

Ahhh I completely missed that! Thanks 😃