@reasonabletech/config-tsup

@reasonabletech/config-tsup provides shared tsup configuration factories for library and tooling packages. The defaults produce ESM-only output with declaration files, targeting a neutral platform — override only the options that differ from those defaults.

Installation

pnpm add -D @reasonabletech/config-tsup tsup typescript

Peer Dependencies

| Dependency | Version | Required | | ---------- | --------- | -------- | | tsup | >= 8.0 | Yes | | typescript | >= 5.0 | Yes |

This package generates tsup configuration objects and requires tsup 8.0+ for ESM-first defaults and TypeScript 5.0+ for type checking.

Exported API

import {
  createTsupConfig,
  configPackageConfig,
  nodeConfig,
  reactConfig,
  type EsbuildOptionsFunction,
  type TsupConfigOptions,
} from "@reasonabletech/config-tsup";

Usage

Default Library Configuration

// tsup.config.ts
import { createTsupConfig } from "@reasonabletech/config-tsup";

export default createTsupConfig();

Customized Configuration

// tsup.config.ts
import { createTsupConfig } from "@reasonabletech/config-tsup";

export default createTsupConfig({
  dts: true,
  entry: { index: "src/index.ts" },
  external: ["react"],
});

Preset Configurations

import {
  configPackageConfig,
  nodeConfig,
  reactConfig,
} from "@reasonabletech/config-tsup";

export default reactConfig;

Defaults

createTsupConfig() defaults to:

• entry: { index: "src/index.ts" }
• format: ["esm"]
• platform: "neutral"
• target: "ES2023"
• sourcemap: true
• treeshake: true
• splitting: false
• clean: false

If tsconfig is omitted, the factory uses tsconfig.build.json automatically when present.

Changelog

See CHANGELOG.md for release history.

This package follows Semantic Versioning. Breaking changes are documented with migration guides when applicable.

Additional References

• Usage Guide
• Package Docs