@types/koa-compose

Installation

npm install --save @types/koa-compose

Summary

This package contains type definitions for koa-compose (https://github.com/koajs/compose).

Details

Files were exported from https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/koa-compose.

index.d.ts

import Koa = require("koa");

declare function compose<T1, U1, T2, U2>(
    middleware: [Koa.Middleware<T1, U1>, Koa.Middleware<T2, U2>],
): Koa.Middleware<T1 & T2, U1 & U2>;

declare function compose<T1, U1, T2, U2, T3, U3>(
    middleware: [Koa.Middleware<T1, U1>, Koa.Middleware<T2, U2>, Koa.Middleware<T3, U3>],
): Koa.Middleware<T1 & T2 & T3, U1 & U2 & U3>;

declare function compose<T1, U1, T2, U2, T3, U3, T4, U4>(
    middleware: [Koa.Middleware<T1, U1>, Koa.Middleware<T2, U2>, Koa.Middleware<T3, U3>, Koa.Middleware<T4, U4>],
): Koa.Middleware<T1 & T2 & T3 & T4, U1 & U2 & U3 & U4>;

declare function compose<T1, U1, T2, U2, T3, U3, T4, U4, T5, U5>(
    middleware: [
        Koa.Middleware<T1, U1>,
        Koa.Middleware<T2, U2>,
        Koa.Middleware<T3, U3>,
        Koa.Middleware<T4, U4>,
        Koa.Middleware<T5, U5>,
    ],
): Koa.Middleware<T1 & T2 & T3 & T4 & T5, U1 & U2 & U3 & U4 & U5>;

declare function compose<T1, U1, T2, U2, T3, U3, T4, U4, T5, U5, T6, U6>(
    middleware: [
        Koa.Middleware<T1, U1>,
        Koa.Middleware<T2, U2>,
        Koa.Middleware<T3, U3>,
        Koa.Middleware<T4, U4>,
        Koa.Middleware<T5, U5>,
        Koa.Middleware<T6, U6>,
    ],
): Koa.Middleware<T1 & T2 & T3 & T4 & T5 & T6, U1 & U2 & U3 & U4 & U5 & U6>;

declare function compose<T1, U1, T2, U2, T3, U3, T4, U4, T5, U5, T6, U6, T7, U7>(
    middleware: [
        Koa.Middleware<T1, U1>,
        Koa.Middleware<T2, U2>,
        Koa.Middleware<T3, U3>,
        Koa.Middleware<T4, U4>,
        Koa.Middleware<T5, U5>,
        Koa.Middleware<T6, U6>,
        Koa.Middleware<T7, U7>,
    ],
): Koa.Middleware<T1 & T2 & T3 & T4 & T5 & T6 & T7, U1 & U2 & U3 & U4 & U5 & U6 & U7>;

declare function compose<T1, U1, T2, U2, T3, U3, T4, U4, T5, U5, T6, U6, T7, U7, T8, U8>(
    middleware: [
        Koa.Middleware<T1, U1>,
        Koa.Middleware<T2, U2>,
        Koa.Middleware<T3, U3>,
        Koa.Middleware<T4, U4>,
        Koa.Middleware<T5, U5>,
        Koa.Middleware<T6, U6>,
        Koa.Middleware<T7, U7>,
        Koa.Middleware<T8, U8>,
    ],
): Koa.Middleware<T1 & T2 & T3 & T4 & T5 & T6 & T7 & T8, U1 & U2 & U3 & U4 & U5 & U6 & U7 & U8>;

declare function compose<T>(middleware: Array<compose.Middleware<T>>): compose.ComposedMiddleware<T>;

declare namespace compose {
    type Middleware<T> = (context: T, next: Koa.Next) => any;
    type ComposedMiddleware<T> = (context: T, next?: Koa.Next) => Promise<void>;
}

export = compose;

Additional Details

• Last updated: Fri, 24 Oct 2025 04:02:41 GMT
• Dependencies: @types/koa

Credits

These definitions were written by jKey Lu, and Anton Astashov.

Similar packages

Other packages similar to @types/koa-compose

koa

Koa is a web framework for Node.js that provides a suite of methods for writing middleware. While koa-compose is specifically for composing middleware, Koa itself includes built-in support for middleware composition and other features for building web applications.

express

Express is another popular web framework for Node.js that uses a similar middleware pattern. While it does not use koa-compose, it has its own mechanism for composing middleware functions. Express is more feature-rich and has a larger ecosystem compared to Koa.

async

The async library provides utility functions for working with asynchronous JavaScript, including functions for composing asynchronous functions. While not specific to middleware, it can be used to achieve similar functionality in different contexts.