Full-Stack Backend Operations in Node.js

You are developing a RESTful API for an e-commerce application using Node.js, Express, and MongoDB. The system should support the following functionalities:

  1. User Authentication: Implement JWT-based authentication with password hashing using bcrypt.
  2. Product Management (CRUD Operations):
  3. Order Processing:
  4. Middleware Operations:
  5. Error Handling:

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