chore(react-router): cleanup test setup

Author: MichaelDeBoey

integration/form-test.ts

@@ -1102,11 +1102,7 @@ test.describe("Forms", () => {
 
     test("empty file inputs resolve to File objects on the server", async ({
       page,
-      channel,
     }) => {
-      // TODO: Look into this test failing on windows
-      test.skip(channel === "msedge", "Fails on windows with undici");
-
       let app = new PlaywrightFixture(appFixture, page);
 
       await app.goto("/empty-file-upload");

package.json

@@ -109,7 +109,6 @@
     "type-fest": "^2.19.0",
     "typedoc": "^0.26.11",
     "typescript": "^5.4.5",
-    "undici": "^6.10.1",
     "unified": "^10.1.2",
     "unist-util-remove": "^3.1.0",
     "vite": "^6.1.0",

packages/react-router/__tests__/setup.ts

@@ -1,44 +1,6 @@
 // https://reactjs.org/blog/2022/03/08/react-18-upgrade-guide.html#configuring-your-testing-environment
 globalThis.IS_REACT_ACT_ENVIRONMENT = true;
 
-if (!globalThis.TextEncoder || !globalThis.TextDecoder) {
-  const { TextDecoder, TextEncoder } = require("node:util");
-  globalThis.TextEncoder = TextEncoder;
-  globalThis.TextDecoder = TextDecoder;
-}
-
-if (!globalThis.ReadableStream || !globalThis.WritableStream) {
-  const { ReadableStream, WritableStream } = require("node:stream/web");
-  globalThis.ReadableStream = ReadableStream;
-  globalThis.WritableStream = WritableStream;
-}
-
-if (!globalThis.fetch) {
-  const { fetch, FormData, Request, Response, Headers } = require("undici");
-
-  globalThis.fetch = fetch;
-  globalThis.Request = Request;
-  globalThis.Response = Response;
-  globalThis.Headers = Headers;
-
-  globalThis.FormData = globalThis.FormData || FormData;
-}
-
-if (!globalThis.TextEncoderStream) {
-  const { TextEncoderStream } = require("node:stream/web");
-  globalThis.TextEncoderStream = TextEncoderStream;
-}
-
-if (!globalThis.TextDecoderStream) {
-  const { TextDecoderStream } = require("node:stream/web");
-  globalThis.TextDecoderStream = TextDecoderStream;
-}
-
-if (!globalThis.TransformStream) {
-  const { TransformStream } = require("node:stream/web");
-  globalThis.TransformStream = TransformStream;
-}
-
 const consoleError = console.error;
 console.error = (msg, ...args) => {
   if (