evanw
Warnings as errors
Apologies if this already a thing that I can't find in the docs, but is it possible to have esbuild not exit 0 when their are warnings? I got caught out today by releasing a bundle that didn't run but the issue was detected by esbuild however CI continued because it passed.
There's no explicit setting for this because I don't think this is a good idea to do in the general case, since esbuild may change warnings from time to time without the expectation that introducing a new warning will break peoples' builds.
You can do this for individual log messages using this feature: https://esbuild.github.io/api/#log-override (by setting the log level to error). That's what I recommend doing.
If you still want to have all warnings stop the build, you can use the JS API instead and then process.exit(1) if there are any warnings.
