Add turbopack-connected HMR event (#54976)

Additional HMR actions that weren't using the types yet.

packages/next/src/server/dev/hot-reloader-types.ts

@@ -18,6 +18,7 @@ export const enum HMR_ACTIONS_SENT_TO_BROWSER {
   DEV_PAGES_MANIFEST_UPDATE = 'devPagesManifestUpdate',
   TURBOPACK_MESSAGE = 'turbopack-message',
   SERVER_ERROR = 'serverError',
+  TURBOPACK_CONNECTED = 'turbopack-connected',
 }
 
 interface ServerErrorAction {
@@ -51,7 +52,7 @@ interface RemovedPageAction {
   data: [page: string | null]
 }
 
-interface ReloadPageAction {
+export interface ReloadPageAction {
   action: HMR_ACTIONS_SENT_TO_BROWSER.RELOAD_PAGE
 }
 
@@ -77,6 +78,10 @@ interface DevPagesManifestUpdateAction {
   ]
 }
 
+export interface TurboPackConnectedAction {
+  type: HMR_ACTIONS_SENT_TO_BROWSER.TURBOPACK_CONNECTED
+}
+
 export type HMR_ACTION_TYPES =
   | TurboPackMessageAction
   | BuildingAction

packages/next/src/server/lib/router-utils/setup-dev.ts

@@ -100,6 +100,8 @@ import {
   HMR_ACTIONS_SENT_TO_BROWSER,
   HMR_ACTION_TYPES,
   NextJsHotReloaderInterface,
+  ReloadPageAction,
+  TurboPackConnectedAction,
 } from '../../dev/hot-reloader-types'
 import { debounce } from '../../utils'
 
@@ -790,7 +792,10 @@ async function startWatcher(opts: SetupOpts) {
         // to fully reload the page to resolve the issue. We can't use
         // `hotReloader.send` since that would force very connected client to
         // reload, only this client is out of date.
-        client.send(JSON.stringify({ action: 'reloadPage' }))
+        const reloadAction: ReloadPageAction = {
+          action: HMR_ACTIONS_SENT_TO_BROWSER.RELOAD_PAGE,
+        }
+        client.send(JSON.stringify(reloadAction))
         client.close()
         return
       }
@@ -910,7 +915,10 @@ async function startWatcher(opts: SetupOpts) {
             }
           })
 
-          client.send(JSON.stringify({ type: 'turbopack-connected' }))
+          const turbopackConnected: TurboPackConnectedAction = {
+            type: HMR_ACTIONS_SENT_TO_BROWSER.TURBOPACK_CONNECTED,
+          }
+          client.send(JSON.stringify(turbopackConnected))
         })
       },