Type Alias FetchMiddleware

FetchMiddleware: (
request: Request,
next: (request: Request) => Promise<Response>,
) => Promise<Response>

Middleware function for intercepting and modifying HTTP requests/responses.

Middlewares form a chain where each can modify the request before passing to the next, and modify the response after receiving it.

Type Declaration

- (
  request: Request,
  next: (request: Request) => Promise<Response>,
  ): Promise<Response>
- Parameters
  - request: Request
    The outgoing Request object
  - next: (request: Request) => Promise<Response>
    Function to pass control to the next middleware
  Returns Promise<Response>
  A Promise resolving to the Response

Example

const authMiddleware: FetchMiddleware = async (request, next) => {
  request.headers.set('Authorization', `Bearer ${token}`);
  const response = await next(request);
  // Optionally transform response
  return response;
};