Can't get TypeScript to work with Bud

I ran yarn add @roots/bud-typescript --dev

Made sure there is a tsconfig.json in my theme root. I created this manually and set up as per @roots/bud-typescript | bud.js

  "extends": "@roots/bud-typescript/tsconfig/tsconfig.json"

This is throwing a TypeScript error to begin with: Cannot find type definition file for '@roots/bud-extensions'. The file is in the program because: Entry point of type library '@roots/bud-extensions' specified in compilerOptions

But now nothing will build at all - I’m getting TypeError: Cannot read properties of undefined (reading 'tsconfig.json')

The tsconfig.json file is there for sure.

What is the magic step in this “zero configuration” setup am I missing?

I have the same problem