useFetcher cannot infer type of data if data is an array of objects with data key

[wolthers]

What version of Remix are you using?

1.13.0

Are all your remix dependencies & dev-dependencies using the same version?

• Yes

Steps to Reproduce

import { useFetcher } from "@remix-run/react";

export default function Component () {
  type MyWronglyInferredResponse = Array<{
    data: {
      key1: number;
      key2: string
    }
  }>
  const wrongFetcher = useFetcher<MyWronglyInferredResponse>()

  if (wrongFetcher.state === "idle" && wrongFetcher.type === "done") {
    wrongFetcher.data
    // ---------- ⬆️
    // (property) data: SerializeDeferred<{
    //     key1: number;
    //     key2: string;
    // }>[]
  }

  type MyCorrectlyInferredResponse = Array<{
    someOtherKeyThanData: {
      key1: number;
      key2: string
    }
  }>
  const correctFetcher = useFetcher<MyCorrectlyInferredResponse>()

  if (correctFetcher.state === "idle" && correctFetcher.type === "done") {
    correctFetcher.data
    // ------------ ⬆️
    // (property) data: SerializeObject<UndefinedToOptional<{
    //   someOtherKeyThanData: {
    //       key1: number;
    //       key2: string;
    //   };
    // }>>[]
  }
}

Expected Behavior

wrongFetcher.data should work as correctFetcher.

Actual Behavior

wrongFetcher isn't inferring the returned data correctly.

I'm almost certain that this change by @jacob-ebey introduced the bug in 1.11.0: https://github.com/remix-run/remix/pull/4920/files#diff-73d5f419b6a2e6f026b68dd66fcf6ac019072255943a18bf69fa94acc2451746R23

[machour]

Probably related to #5211

[machour]

This will be fixed in 1.16.0 🎉
Here's the result with 1.16.0-pre.0: