Rslib Best Practices

This covers the practical stuff you need when building libraries with Rslib: config patterns with defineConfig, when to use bundle versus bundleless mode, setting up declaration files with the experimental tsgo feature, and getting your package.json exports field right so consumers don't hit missing dependency errors. It pushes you toward pure ESM and includes specific CLI commands for watch mode and config inspection. The dependency guidance is solid, especially the bit about devDependencies in bundle mode. If you're shipping a component library or Node utility with Rslib, this gives you the opinionated defaults and debugging patterns to avoid the common gotchas.