conditional debug

[Haroenv]

Describe the feature you'd love to see

I'd like to do something like if (myDevCondition) initDebug();, so I can have different output files where that condition is either true or false. I know I could do require('preact/debug'), but that wouldn't translate to pure esm, as it would mean I'd need to process the if out of the code, which currently isn't yet possible.

Maybe initDebug from preact/debug/src/debug.js could be exposed somehow?

Additional context (optional)

In my libraries I'm using preact as a dependency, so people don't necessarily import it themselves.

closest issue I find is #1746 which suggests to "just use require", which probably works on pages, but not really on libraries

[rschristian]

If you're happy to have multiple output files, why not configure your build tool (assuming you're using one) to inject import 'preact/debug'; into some/one of your output files?

Edit: Exposing initDebug wouldn't help here as debug needs to run before all other Preact imports as we rely on side effects & attaching to a global options instance.

[Haroenv]

Yes, that could indeed be one of the solutions. Most of our implementations indeed have multiple output files, especially in UMD, however the ESM version usually only has one file with conditionals à la process.env.NODE_ENV, for which I'm not really sure what the solution would be.

Thanks for your idea already!