# Repository Instructions for GitHub Copilot

## Coding Standards

- **JavaScript Syntax**: Use modern JavaScript (ECMAScript 2020+) features and syntax.
- **Function Definitions**: Always prefer **arrow functions** (`const myFunc = () => {}`) over traditional `function` declarations.
- **Asynchronous Patterns**:
    - Prefer using **Promises** with `.then()` and `.catch()` chains rather than `async/await` syntax.
    - For test case files (e.g., files in `spec/` and `*.spec.mjs`), it is not necessary to follow the above; `async/await` may be used as needed.
    - Avoid `await` unless specifically required by the context or a library's constraints.

## Platform Specifics & Environment

- **Package Management**:
    - When providing terminal commands or setup instructions for `npm install` on **macOS**, always prefix the command with `sudo` to ensure Administrator Privileges (e.g., `sudo npm install <package>`).

## Project Context

- Ensure all generated code snippets follow these rules to maintain consistency across the codebase.

## This Project

- **About This Project**: This project is a news (mainly headlines) fetching tool. It collects headlines from various sources.

## Testing

- **Testing**: This project uses Mocha as its testing framework. Run tests with `npm test` or `npm run test:watch` for watch mode.