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Codebase Naming Conventions and Best Practices

Welcome to our project! This README outlines the conventions and best practices we follow to ensure our code is clean, consistent, and easy to maintain. Adherence to these guidelines is crucial for collaboration and the long-term health of the codebase.

Table of Contents

General Principles

  • Clarity and Consistency: Clear, consistent names aid in understanding and maintaining the code.
  • Descriptive Names: Names should be intuitive and describe the entity's functionality.
  • Established Patterns: Follow patterns for ease of integration and maintenance.

Front-End Conventions

  • UI Components: PascalCase for both filenames and class names (e.g., UserProfile.tsx).
  • React Hooks: Prefixed with use and camelCase (e.g., useAuth.ts).

Cascading Style Sheets

  • CSS Classes: Use kebab-case for names. Example: primary-button.
  • Be semantic: Name classes based on their purpose rather than their appearance, e.g., .btn-danger over .red-button.
  • BEM (Block Element Modifier): A common methodology where the class is named following a block__element--modifier format, e.g., .button__icon--small

Libraries Conventions

  • Classes, Types, and Enums: Use PascalCase. Example: LinkedList, UserType.

Back-End Conventions

  • Controllers: PascalCase with Controller suffix; kebab-case for filenames (e.g., user.controller.ts).
  • Services: PascalCase with Service suffix (e.g., UserService).
  • Middleware: PascalCase with Middleware suffix (e.g., AuthMiddleware).

Helpers Conventions

  • Helpers/Utilities: verbNoun format in camelCase for functions and filenames (e.g., formatDate.ts).

General

  • Variables: Use CamelCase. Example: userData.
  • Interfaces: Prefix with I and use PascalCase. Example: IUser.
  • Enums: Use PascalCase in singular form. Example: UserRole.
  • Global Constants: Use UPPER_SNAKE_CASE. Example: DEFAULT_USER_ROLE.
  • Environment Variables: Use UPPER_SNAKE_CASE. Example: API_BASE_URL.
  • Assets/Images/Icons: Name with kebab-case. Example: logo-icon.svg.
  • Test Filenames: Match the tested file's filename with .test.ts (e.g., dateHelpers.test.ts).
  • Documentation: Use TSDoc for clarity.

File Names & Structures

  • File Names: use the same convention as the default export (e.g. for a class UserProfile use UserProfile.tsx or for a function transformUser() use userFunction.ts).
  • File Names for Helpers: Name the file based on the general functionality or category of the helpers. Use camelCase. For example, if the file contains various string manipulation functions, you could name it stringHelpers.ts or authHelpers.ts.
  • Folders: Use kebab-case for general folders. Example: user-profile.
  • Group by Feature: Organize files in feature-specific folders. For instance, all user-related entities such as UserList, UserProfile, and UserEdit can be within a users directory.
  • Folder Size: If a folder has more than 10 files then generally, try to group some tother into sub-directories.
  • Avoid Redundancy: Don't repeat folder names in the file name, e.g., if you have a user/ folder, you don't need user/user-list.component.ts; just list.component.ts is clearer.

Best Coding Practices

  • TSDoc: For all public interfaces, classes, functions, and methods.
  • Linting: Try ensure as many coding conventions and styles are enforced with our linters. This is defined in the files .prettierrc.json, tsconfig.json and .eslintrc.json. By downloading the suggested VSCode extensions (specified in .vscode/extensions.json) your code will be automatically formatted to these rules.

TSDoc Guide

  • When to Add: On public interfaces, classes, functions, methods.

  • Minimum Include: Description, parameters, return type.

  • Example:

    /**
 * Calculates the sum of two numbers.
 * @param {number} a - The first number.
 * @param {number} [b] - The second number (optional).
 * @returns {number} The sum of the two numbers.
 */
function add(a: number, b?: number): number {
    return a + b ?? 0;
}