Aborting requests with expired tokens from the Authentication Middleware

[darkbasic]

Description

I want to create an Authentication interceptor that whenever the JWT token is expired aborts the requests since there is no need to to keep them alive if they're going to return 401 anyway. In order to do so I need a way to access either the AbortController or the abort() function in the MiddlewareOnRequest onRequest callback.

Proposal

Instantiate a new AbortController() and expose either the controller itself or its abort() function in the MiddlewareOnRequest onRequest callback.

const authInterceptor: Middleware = {
  async onRequest({ request, controller, abort }) {
    // Use either abort() or controller.abort()
  }
}

Example of AbortController usage:

const controller = new AbortController()
const signal = controller.signal
fetch(urlToFetch, {
    method: 'get',
    signal: signal,
})
controller.abort()

Checklist

• I’m willing to open a PR for this (see CONTRIBUTING.md)

[gzm0]

Instead of executing the request and then aborting it, would it make sense to just throw in the onRequest middleware in this case?

In fact, the onRequest middleware gets executed before the fetch call:

openapi-typescript/packages/openapi-fetch/src/index.js

Lines 107 to 127 in 639ec45

	for (const m of middlewares) {
	if (m && typeof m === "object" && typeof m.onRequest === "function") {
	const result = await m.onRequest({
	request,
	schemaPath,
	params,
	options,
	id,
	});
	if (result) {
	if (!(result instanceof CustomRequest)) {
	throw new Error("onRequest: must return new Request() when modifying the request");
	}
	request = result;
	}
	}
	}
	}
	// fetch!
	let response = await fetch(request);