Add configurable log level for vitest-pool-workers

[ProductOfAmerica]

Describe the solution

Currently, the @cloudflare/vitest-pool-workers package has the log level hardcoded to VERBOSE link:

const log = new Log(LogLevel.VERBOSE, { prefix: "vpw" });

This results in [vpw:debug] and [vpw:info] messages being printed on every test run, which adds noise to test output:

[vpw:debug] Adding `enable_nodejs_tty_module` compatibility flag...
[vpw:debug] Adding `enable_nodejs_fs_module` compatibility flag...
[vpw:info] Starting isolated runtimes for vitest.config.ts...

Requested feature:

Add a configuration option to control the log level, e.g.:

export default defineWorkersConfig({
 test: {
  poolOptions: {
    workers: {  
     logLevel: 'warn', // or 'none', 'error', 'info', 'debug', 'verbose'
      }, 
    },
   },  
});

Cleaner test output in CI/CD pipelines and local development, especially when running large test suites.

[edmundhung]

Makes sense to me 👍🏼 . We are making some big changes to support vitest 4 right now, we can add an option for it once that's done.

[ProductOfAmerica]

Makes sense to me 👍🏼 . We are making some big changes to support vitest 4 right now, we can add an option for it once that's done.

I’m shocked I got a reply so quickly! Thank you! Cloudflare is now my favorite tech company 😂