# Essential Packages and Tools for Building a Reusable UI Component Library for Dogwood

When creating a reusable UI component library with TypeScript for Next.js, you might need to include and configure several essential packages and tools to ensure the library is well-documented, tested, and easily maintained. Here are some of the essential packages and tools you can consider adding:

## 1. Documentation and Type Declarations

```bash
npm install typedoc @types/react @types/node --save-dev

• TypeDoc:

  • Purpose: To generate API documentation for your components.
  • Why: Clear and comprehensive documentation helps users understand how to use your components effectively.

• @types/react:

  • Purpose: For TypeScript type declarations for React.
  • Why: TypeScript type declarations improve code quality, provide auto-completion, and catch type-related errors during development.

• @types/node:

  • Purpose: For TypeScript type declarations for Node.js.
  • Why: Type declarations for Node.js enable type-safe interactions with server-side code in Next.js.

2. Testing and Development

npm install jest @testing-library/react @testing-library/react-hooks @testing-library/jest-dom --save-dev

• Jest:

  • Purpose: A popular testing framework for JavaScript/TypeScript.
  • Why: Jest simplifies unit and integration testing, ensuring your components work as expected.

• react-testing-library, @testing-library/react-hooks, @testing-library/jest-dom:

  • Purpose: For testing React components, hooks, and extending Jest matchers.
  • Why: These libraries enhance testing capabilities, making it easier to write effective tests for your components.

3. Build and Bundling

npm install @babel/core rollup @rollup/plugin-typescript @rollup/plugin-commonjs @rollup/plugin-node-resolve --save-dev

• @babel/core:

  • Purpose: For transpiling TypeScript and JSX.
  • Why: Transpilation ensures compatibility across different JavaScript environments.

• rollup:

  • Purpose: For bundling your library.
  • Why: Rollup bundles your components into a single file for efficient distribution.

• @rollup/plugin-typescript, @rollup/plugin-commonjs, @rollup/plugin-node-resolve:

  • Purpose: These plugins provide TypeScript support, handle CommonJS modules, and resolve Node.js modules.
  • Why: They enable seamless integration and bundling of TypeScript code in your library.

4. Linting and Formatting

npm install eslint prettier --save-dev

• ESLint:

  • Purpose: For linting TypeScript and JavaScript code.
  • Why: Linting enforces coding standards, improving code quality and readability.

• Prettier:

  • Purpose: For code formatting.
  • Why: Code formatting ensures consistent and clean code style throughout your project.

5. Husky and lint-staged

npm install husky lint-staged --save-dev

• Husky:

  • Purpose: For enforcing code quality and formatting on pre-commit.
  • Why: Husky prevents the commit of code that doesn't meet your defined standards.

• lint-staged:

  • Purpose: Run linting and formatting checks on staged files before committing.
  • Why: Ensures that only properly formatted and linted code is committed.

6. Publishing and Versioning

npm install np --save-dev

• np (Package Publisher):

  • Purpose: A tool for easy npm package publishing.
  • Why: Simplifies the process of releasing updates and versions of your library.

• Semantic Versioning:

  • Purpose: Follow semantic versioning for your package versions.
  • Why: Semantic versioning provides clarity about the compatibility and impact of library updates.

7. Continuous Integration (CI)

• Purpose: Configure CI tools like Travis CI or GitHub Actions to automate testing and deployment processes.
• Why: CI ensures that your code is continuously tested and deployed, maintaining high quality and reliability.

8. Documentation Generation

• Purpose: Configure TypeDoc to generate documentation for your components and use a tool like GitHub Pages to host it.
• Why: Documentation is crucial for users to understand how to use your components effectively.

9. Peer Dependencies

• Purpose: Define any peer dependencies that your library relies on, such as React.
• Why: Specifying peer dependencies ensures compatibility and helps users understand which dependencies they need to install.

In addition to these essential packages and tools, you should also consider setting up a version control system (e.g