Array of middleware functions to compose
A single middleware function that executes all provided middleware in sequence
const middleware1: Middleware = async ({params, options, next}) => {
console.log('middleware1 start');
await next();
console.log('middleware1 end');
};
const middleware2: Middleware = async ({params, options, next}) => {
console.log('middleware2 start');
await next();
console.log('middleware2 end');
};
const composed: Middleware = composeMiddleware([middleware1, middleware2]);
// Execution order:
// middleware1 start
// -> middleware2 start
// -> handler
// -> middleware2 end
// -> middleware1 end
Composes multiple middleware functions into a single middleware function.
Middleware functions are executed in order, with each middleware having the ability to call
next()to proceed to the next middleware in the chain. The composed middleware follows the onion model where middleware executes in order beforenext()and in reverse order afternext().When a middleware returns a value(short-circuits), that result becomes the response and the
resobject in theRequestContextis mutated with that result converted to a Web Response preserving any existing headers while applying the status code from the middleware result.