rolldown-dts-minify

Minify declaration outputs in Rolldown and tsdown builds using dts-minify.

Install

npm install rolldown-dts-minify

typescript is not installed by this package. Pass your own TypeScript instance to the plugin factory.

Usage

import ts from 'typescript'
import { rolldownDtsMinifyPlugin } from 'rolldown-dts-minify'
import { defineConfig } from 'tsdown'

export default defineConfig({
    entry: ['./src/index.ts'],
    dts: true,
    plugins: [rolldownDtsMinifyPlugin(ts)],
})

Pass dts-minify options as the second argument:

rolldownDtsMinifyPlugin(ts, {
    keepJsDocs: true,
})

What It Does

• Minifies .d.ts, .d.mts, and .d.cts bundle outputs.
• Removes stale declaration sourceMappingURL comments after minification.
• Deletes matching declaration map files because the minified declarations no longer match them.

Notes

• This package intentionally does not depend on a specific runtime typescript version.
• dts-minify currently has some edge cases around template-literal-heavy declaration output. This plugin follows dts-minify behavior and does not try to patch around those bugs.