Which package(s) are affected?

Starter Kits (@lit/lit-starter-js / @lit/lit-starter-ts)

Description

When I want to build the docs through pnpm run docs the command fails due to missing prismjs theme.

> @lit/lit-starter-ts@2.0.1 docs:assets
> cp node_modules/prismjs/themes/prism-okaidia.css docs/

cp: node_modules/prismjs/themes/prism-okaidia.css: No such file or directory

Reproduction

git clone https://github.com/lit/lit-element-starter-ts
cd lit-element-starter-ts
pnpm i
pnpm run docs

Workaround

Installing prismjs as dev dependency.

Is this a regression?

No or unsure. This never worked, or I haven't tried before.

Affected versions

lit 3.1.2

Browser/OS/Node environment

node v21.6.2
pnpm v8.15.1