lib: drop fetch experimental warning

Signed-off-by: Matteo Collina <hello@matteocollina.com>
PR-URL: nodejs/node#45287
Reviewed-By: Moshe Atlow <moshe@atlow.co.il>
Reviewed-By: Robert Nagy <ronagy@icloud.com>
Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
Reviewed-By: Mohammed Keyvanzadeh <mohammadkeyvanzade94@gmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>

lib/internal/process/pre_execution.js

@@ -19,7 +19,6 @@ const {
 const { reconnectZeroFillToggle } = require('internal/buffer');
 const {
   defineOperation,
-  emitExperimentalWarning,
   exposeInterface,
 } = require('internal/util');
 
@@ -212,7 +211,6 @@ function setupFetch() {
   }
 
   async function fetch(input, init = undefined) {
-    emitExperimentalWarning('The Fetch API');
     return lazyUndici().fetch(input, init);
   }
 

test/parallel/test-fetch.mjs

@@ -10,17 +10,9 @@ assert.strictEqual(typeof globalThis.Headers, 'function');
 assert.strictEqual(typeof globalThis.Request, 'function');
 assert.strictEqual(typeof globalThis.Response, 'function');
 
-common.expectWarning(
-  'ExperimentalWarning',
-  'The Fetch API is an experimental feature. This feature could change at any time'
-);
-
-const server = http.createServer((req, res) => {
-  // TODO: Remove this once keep-alive behavior can be disabled from the client
-  // side.
-  res.setHeader('Keep-Alive', 'timeout=0, max=0');
+const server = http.createServer(common.mustCall((req, res) => {
   res.end('Hello world');
-});
+}));
 server.listen(0);
 await events.once(server, 'listening');
 const port = server.address().port;