Addons Scanner Utilities

The `addons-scanner-utils` library provides a collection of helper functions specifically designed for building command-line interfaces (CLIs) and backend services within the Mozilla add-ons scanning ecosystem. Currently at version `15.0.0`, it maintains a rapid release cadence, with several major versions released in quick succession, indicating active and continuous development. Key functionalities include robust error handling through the `AppError` class, secure JSON Web Token (JWT) generation for authenticating with platforms like Add-ons for Mozilla (AMO), and versatile file operations such as downloading remote resources. The library is often integrated with `express` for API development, supporting specific authentication patterns like `HMAC-SHA256` and handling `X-Forwarded-Authorization` headers. Its core differentiator is its specialized focus on the Mozilla add-ons context, offering tailored solutions for common operational tasks in that domain. It ships with comprehensive TypeScript types, ensuring type-safe development.