Module success

Uniform failure reporting middleware.

Admits only 2xx responses from the wrapped Fetch implementation, reporting error responses and transport failures alike as problems, so that a failed exchange is handled in one shape whatever caused it.

The same shape is available on its own to code handling failures raised elsewhere: any value may be recognised as a problem, or normalised into one, so that a handler branches on problem details without first telling apart what it was handed.

Usage

import { createFetch, NotFound } from "@metreeca/http";
import { success } from "@metreeca/http/success";

const client = createFetch(success()); // rejects unless response.ok

try {

  const response = await client("https://api.example.com/data");

} catch ( problem ) { // a Problem, whatever went wrong

  if ( problem.status === NotFound ) { // handle a missing resource
  }

}
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