To set this up from scratch:

Setup pnpm and vendored deps

1. Initialize pnpm workspace
2. Copy into vendor directory playground and bundler packages.
3. add root level tsconfig
4. delete references from tsconfig.jsons

Build the world

1. Run pnpm install
2. Run build on vendor/bundler
3. Run build on vendor/playground
4. Run npx tsc -p . in typespec-validates (needs build script, whoops)

Configure playground

1. Edit vite.config.js, adding "typespec-validation" to the libraries array.
2. Install prettier (not technically required, makes peer dep warnings go away)
3. npm run dev

Code changes from original

1. Delete default css content in App.css
2. Use StyledPlayground instead of Playground
3. Attach monaco services (for colorization)