Emit type using rollup instead of using tsc directly

[nvh95]

Is your feature request related to a problem? Please describe.
Currently, jest preview building process use tsc to emit types directly. It might get complicated if we need to generate types for multiple entries.

Describe the solution you'd like

• Generate types using rollup
• Need to be fast in watch mode, so build:watch might not need to generate types (if generating types in watch mode is fast, it's OK to leave it there).

Describe how should jest-preview implements this feature

• Use rollup plugin to emit types
• (Optional) Do not emit types in watch mode to save time

Image

[nvh95]

Research to use tsup
Reference: mswjs/msw#1247