Javascript + Node

Implement JWT authentication flow in Node.js Express with bcrypt password hashing, token signing and verification, refresh token endpoint, and protected.

Build an interactive CLI tool in Node.js using Inquirer for prompts, chalk for colored output, and ora for spinners. Includes command chaining, template.

Handle file uploads in Node.js Express using multer middleware with disk and memory storage strategies, file filtering by MIME type, size limits, and.

Validate form data in Node.js Express using express-validator middleware chains, custom sanitizers, grouped error responses, and conditional validation.