File tracing

[egoist]

esbuild can only bundle import/require, so it doesn't work for update-notifier package which includes code like this:

spawn(process.execPath, [path.join(__dirname, 'check.js')])

check.js is not copied to out dir, tsup could introduce a --trace-files flag to support this 🧐

[OmgImAlexis]

In a similar sense there are files that use imports like so for native files which I would love to see resolved at build time. This would allow tsup to then ship the .node file. Right now it skips the .node file resulting in the bundled file not working.

return require('./uws_' + process.platform + '_' + process.arch + '_' + process.versions.modules + '.node');