feat!: make import.meta.hot.send async

docs/guide/api-hmr.md

@@ -40,7 +40,10 @@ interface ViteHotContext {
     event: T,
     cb: (payload: InferCustomEventPayload<T>) => void,
   ): void
-  send<T extends string>(event: T, data?: InferCustomEventPayload<T>): void
+  send<T extends string>(
+    event: T,
+    data?: InferCustomEventPayload<T>,
+  ): Promise<void>
 }
 ```
 

packages/vite/rollup.config.ts

@@ -194,7 +194,7 @@ const moduleRunnerConfig = defineConfig({
   ],
   plugins: [
     ...createSharedNodePlugins({ esbuildOptions: { minifySyntax: true } }),
-    bundleSizeLimit(53),
+    bundleSizeLimit(54),
   ],
 })
 

packages/vite/src/shared/hmr.ts

@@ -143,8 +143,11 @@ export class HMRContext implements ViteHotContext {
     removeFromMap(this.newListeners)
   }
 
-  send<T extends string>(event: T, data?: InferCustomEventPayload<T>): void {
-    this.hmrClient.send({ type: 'custom', event, data })
+  async send<T extends string>(
+    event: T,
+    data?: InferCustomEventPayload<T>,
+  ): Promise<void> {
+    await this.hmrClient.send({ type: 'custom', event, data })
   }
 
   private acceptDeps(
@@ -189,8 +192,8 @@ export class HMRClient {
     }
   }
 
-  public send(payload: HotPayload): void {
-    this.transport.send(payload)
+  public async send(payload: HotPayload): Promise<void> {
+    await this.transport.send(payload)
   }
 
   public clear(): void {

packages/vite/src/shared/moduleRunnerTransport.ts

@@ -179,7 +179,7 @@ const createInvokeableTransport = (
 export interface NormalizedModuleRunnerTransport {
   connect?(onMessage?: (data: HotPayload) => void): Promise<void> | void
   disconnect?(): Promise<void> | void
-  send(data: HotPayload): void
+  send(data: HotPayload): Promise<void>
   invoke<T extends keyof InvokeMethods>(
     name: T,
     data: Parameters<InvokeMethods[T]>,

packages/vite/types/hot.d.ts

@@ -32,5 +32,8 @@ export interface ViteHotContext {
     event: T,
     cb: (payload: InferCustomEventPayload<T>) => void,
   ): void
-  send<T extends string>(event: T, data?: InferCustomEventPayload<T>): void
+  send<T extends string>(
+    event: T,
+    data?: InferCustomEventPayload<T>,
+  ): Promise<void>
 }