@robonen/tsdown

Shared tsdown build configuration for every @robonen package — one source of truth for output formats, declarations, and bundle hygiene.

Every library in this monorepo ships dual ESM/CJS builds with type declarations, a clean dist, and a consistent license banner. Re-declaring that in each package's tsdown.config.ts is repetitive and drifts over time. @robonen/tsdown exports a single sharedConfig object you spread into defineConfig, then add only what is package-specific — usually just entry and tsconfig.

Dual ESM + CJS

Emits both esm and cjs formats so packages work in modern bundlers and legacy require setups alike.

Types included

dts: true generates .d.ts declarations on every build — no separate type pipeline to maintain.

Clean, stable output

clean: true wipes dist first and hash: false keeps file names deterministic for predictable publishing.

Spread & override

It is a plain object typed as InlineConfig — spread it, override any field, and let editor autocomplete guide you.

Install

Add the config package and tsdown itself as dev dependencies:

pnpm add -D @robonen/tsdown tsdown

Usage

Create tsdown.config.ts in your package, spread sharedConfig, and supply your entry points:

import { defineConfig } from 'tsdown';
import { sharedConfig } from '@robonen/tsdown';

export default defineConfig({
  ...sharedConfig,
  tsconfig: './tsconfig.src.json',
  entry: ['src/index.ts'],
});

Because sharedConfig is a normal object, you can override or extend any field after spreading — add plugins, extra entries, or tweak the declaration options:

import { defineConfig } from 'tsdown';
import { sharedConfig } from '@robonen/tsdown';
import Vue from 'unplugin-vue/rolldown';

export default defineConfig({
  ...sharedConfig,
  entry: ['src/index.ts', 'src/*/index.ts'],
  plugins: [Vue({ isProduction: true })],
  // layer on top of the shared defaults
  dts: { vue: true },
});

Where to next

sharedConfig — the full list of defaults and their exact values.
Read the guide sections below for the conventions baked into the shared build and tips for package-specific overrides.

Overview

Shared tsdown configuration for @robonen packages