feat: add server.warmupRequest to future deprecation

Author: sapphi-red

packages/vite/src/node/deprecations.ts

@@ -24,7 +24,7 @@ const deprecationMessages = {
     'The `server.moduleGraph` is replaced with `this.environment.moduleGraph`.',
   removeServerHot: 'The `server.hot` is replaced with `this.environment.hot`.',
   removeServerTransformRequest:
-    'The `server.transformRequest` is replaced with `this.environment.transformRequest`.',
+    'The `server.transformRequest` related APIs are replaced with methods in `this.environment`.',
 
   removeSsrLoadModule:
     'The `server.ssrLoadModule` is replaced with Environment Runner.',

packages/vite/src/node/server/index.ts

@@ -601,6 +601,11 @@ export async function _createServer(
       return environment.transformRequest(url)
     },
     warmupRequest(url, options) {
+      warnFutureDeprecation(
+        config,
+        'removeServerTransformRequest',
+        'server.warmupRequest() is deprecated. Use environment.warmupRequest() instead.',
+      )
       const environment = server.environments[options?.ssr ? 'ssr' : 'client']
       return environment.warmupRequest(url)
     },