plugin-typescript

@yarnpkg/plugin-typescript

Features

• Automatically adds @types/ packages into your dependencies when you add a package that doesn't include its own types
• Adds support for types to publishConfig (same behavior as publishConfig.bin)

Install

This plugin is included by default starting from Yarn 4.

Example

❯ yarn/packages/plugin-typescript ❯ yarn add lodash

➤ YN0000: · Yarn X.Y.Z
➤ YN0000: ┌ Resolution step
➤ YN0000: └ Completed in 0.24s
➤ YN0000: ┌ Fetch step
➤ YN0013: │ @types/lodash@npm:4.14.121 can't be found in the cache and will be fetched from the remote registry
➤ YN0013: │ lodash@npm:4.14.0 can't be found in the cache and will be fetched from the remote registry
➤ YN0000: └ Completed in 3.63s
➤ YN0000: ┌ Link step
➤ YN0000: └ Completed in 2.75s
➤ YN0000: · Done with warnings in 6.81s

As you can see in the fetch step, even though we only added lodash into our dependencies, Yarn automatically figured out that we would need @types/lodash, and added it before we ask it to.