Type Alias Middleware

Middleware: (next: FetchLike) => FetchLike

A middleware is a function that accepts the next handler in the chain and returns a new handler that wraps it.

Type Declaration

- (next: FetchLike): FetchLike
- Parameters
  - next: FetchLike
  Returns FetchLike

Example

const timing: Middleware = (next) => async (url, init) => {
    const start = performance.now();
    const res = await next(url, init);
    console.log(`${url} took ${performance.now() - start}ms`);
    return res;
};