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Factory for Dynamically Composed Middleware Chains

Factory for Dynamically Composed Middleware Chains

Create a factory that returns a composed middleware function based on a list of configured behaviors.

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Problem statement

You’re designing a middleware engine where different middleware behaviors (e.g., logging, auth, rate limiting) can be turned on or off using a config array like:

const config = ['logger', 'auth'];

Each middleware is a class with a .handle(req, next) method that must call ...