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Conventions relating to Typescript Projects

How to Create a TypeScript Project

  1. Project Initialization: To start a new TypeScript project, create a project directory and navigate to it in your terminal.

  2. Initialize a Git Repository (Optional): If you’re using Git, run the following commands to initialize a Git repository:

    git init

  3. Initialize a Node.js/TypeScript Project: To create a Node.js/TypeScript project, you can use the following commands:

    mkdir my-typescript-project
cd my-typescript-project
npm init -y
tsc --init

  4. Code Editor: Open your favorite code editor to start working on your project.

Dependency Management with npm

NPM is the most widely used package manager for TypeScript. To manage your project’s dependencies:

  1. Install Dependencies: Use the npm install command to install packages. For example:

    npm install package-name

  2. package.json: Your project’s dependencies and other metadata are stored in package.json. Make sure to keep it updated.

  3. Scripts: You can define custom scripts in package.json to automate common tasks like building, testing, and running your project.

Linting and Testing

Linting Rules

Enforcing linting rules is essential for maintaining code quality. You can use tools like ESLint and TypeScript ESLint for TypeScript. Here’s how to set it up:

  1. Install ESLint and TypeScript ESLint: Run the following command to install ESLint and TypeScript ESLint:

    npm install eslint @typescript-eslint/parser @typescript-eslint/eslint-plugin --save-dev

  2. ESLint Configuration: Create an ESLint configuration file (.eslintrc.js) and customize linting rules to your project’s needs.

Unit Testing

For unit testing, Jest is one of the most popular testing frameworks for TypeScript. To set up Jest:

  1. Install Jest: Run the following command to install Jest and TypeScript support:

    npm install jest @types/jest ts-jest --save-dev

  2. Jest Configuration: Create a Jest configuration file (e.g., jest.config.js) and configure it according to your project’s requirements.

Project Templates

Consider using project templating tools like Cookiecutter for TypeScript to streamline project creation. Alternatively, you can create your own custom project template that includes all the necessary configurations and boilerplate code.

How to Document Your Code

Proper code documentation is crucial for understanding and maintaining your project. Consider using tools like TypeDoc for generating documentation from TypeScript code.