login-example-app/CLAUDE.md

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Project Overview

The repository contains a web application that includes a user login feature. Details about the implementation, tech stack, and file structure are minimal in the current codebase. Future work should reference the Readme.md for the high‑level goal and explore the source files to understand the actual architecture.

Common Development Tasks

While the exact build system is not yet visible (e.g., there is no package.json or Makefile in the repository at this time), the typical commands for a JavaScript/Node based webapp are:

• Install dependencies: npm install (or yarn/pnpm as appropriate)
• Run the development server: npm run dev (or the script defined in package.json for starting the app)
• Run tests: npm test (look for a test script; adjust if the project uses another test runner)
• Run a single test: npm test -- <test‑file-or‑pattern>
• Lint the code: npm run lint (or the tool specified in the project, such as eslint or prettier)
• Build for production: npm run build

Note

: Verify the actual command names by inspecting the scripts section of package.json or any build configuration files present in the repository.

High‑Level Architecture Guidance

Because the repository does not currently expose a detailed file tree, the following steps are recommended for Claude Code to quickly become productive:

1. Locate the entry point – Search for files named index.js, app.js, server.js, or similar. These typically bootstrap the web server or front‑end.
2. Identify the authentication flow – Look for modules or routes that handle login (/login, auth, session). Common patterns include:
   • Express.js middleware (passport, express-session)
   • Front‑end form handling (React, Vue, etc.)
3. Understand data persistence – Search for database client usage (mongoose, pg, sequelize, etc.) to see where user credentials are stored.
4. Review configuration – Check for .env files, config directories, or environment variable usage that defines secrets, database URLs, and authentication keys.
5. Check for tests – Look for __tests__, test, or spec directories; examine test files to see the expected behavior of the login feature.

Project‑Specific Files to Review

• Readme.md – Provides the high‑level goal of the project.
• Any source directories (e.g., src/, server/, frontend/) – Contain the implementation details.
• Configuration files (.env.example, config/*.js, webpack.config.js, etc.) – Define environment setup and build steps.

Recommendations for Future Contributors

• Keep the README.md up to date with exact commands for installing dependencies, running the dev server, testing, linting, and building the project.
• Add a package.json (or equivalent) with clearly named scripts so that Claude Code can invoke common tasks without guessing.
• Document the authentication flow (e.g., which library is used, where user sessions are stored) to accelerate onboarding.
• Include a tests/ directory with unit/integration tests for the login functionality.

How Claude Code Should Use This File

• Use the Common Development Tasks section to infer which npm/Yarn scripts to run, but always verify the presence of those scripts in the project configuration before execution.
• Follow the High‑Level Architecture Guidance steps to explore the codebase efficiently when a user asks about implementation details.
• Update this CLAUDE.md whenever new build tools, scripts, or architectural components are added to the repository.