What is egg-development-stub?

This project is a tool for developers working with the Egg.js framework. It lets you create "stubs", lightweight stand-ins for parts of your application like services or external calls, so that during local development you can skip slow or complex operations and get immediate, predictable responses. When you're building an app, your code often needs to talk to databases or external services that might be slow, unreliable, or not yet built. This tool solves that by letting you write a fake version of that service that simply returns a fixed, instant response. You drop these fake files into a specific folder in your project, and the tool automatically swaps the real service for your fake one whenever the app runs in a local development environment. The primary audience is developers using Egg.js who want a smoother local coding experience. For example, if you have a service that normally fetches user data from a live database, you could use this to stub it out so it instantly returns a fake user profile instead. This lets you focus on building the visible parts of your app without waiting on the database to respond or needing real data on hand. Setting it up involves enabling a plugin in a local configuration file and creating a parallel folder structure for your stubs. It's designed strictly for non-production environments, it automatically ignores itself when running in production. Beyond simple fixed responses, the tool offers an advanced mode where your fake service can inherit from the real one, allowing you to override only specific methods while letting the rest behave normally. The README is quite sparse and doesn't detail any notable architectural tradeoffs. It mainly serves as a basic instruction manual for where to place files and how to enable the plugin, leaving the broader context of testing strategy to the developer.