fix(types): explicitly set Vite hooks' this to void (#9885)

Author: antfu

packages/vite/src/node/plugin.ts

@@ -55,7 +55,10 @@ export interface Plugin extends RollupPlugin {
   /**
    * Apply the plugin only for serve or build, or on certain conditions.
    */
-  apply?: 'serve' | 'build' | ((config: UserConfig, env: ConfigEnv) => boolean)
+  apply?:
+    | 'serve'
+    | 'build'
+    | ((this: void, config: UserConfig, env: ConfigEnv) => boolean)
   /**
    * Modify vite config before it's resolved. The hook can either mutate the
    * passed-in config directly, or return a partial config object that will be
@@ -66,14 +69,17 @@ export interface Plugin extends RollupPlugin {
    */
   config?: ObjectHook<
     (
+      this: void,
       config: UserConfig,
       env: ConfigEnv
     ) => UserConfig | null | void | Promise<UserConfig | null | void>
   >
   /**
    * Use this hook to read and store the final resolved vite config.
    */
-  configResolved?: ObjectHook<(config: ResolvedConfig) => void | Promise<void>>
+  configResolved?: ObjectHook<
+    (this: void, config: ResolvedConfig) => void | Promise<void>
+  >
   /**
    * Configure the vite server. The hook receives the {@link ViteDevServer}
    * instance. This can also be used to store a reference to the server
@@ -126,6 +132,7 @@ export interface Plugin extends RollupPlugin {
    */
   handleHotUpdate?: ObjectHook<
     (
+      this: void,
       ctx: HmrContext
     ) => Array<ModuleNode> | void | Promise<Array<ModuleNode> | void>
   >

packages/vite/src/node/plugins/html.ts

@@ -846,6 +846,7 @@ export interface IndexHtmlTransformContext {
 }
 
 export type IndexHtmlTransformHook = (
+  this: void,
   html: string,
   ctx: IndexHtmlTransformContext
 ) => IndexHtmlTransformResult | void | Promise<IndexHtmlTransformResult | void>

packages/vite/src/node/preview.ts

@@ -62,10 +62,13 @@ export interface PreviewServer {
   printUrls(): void
 }
 
-export type PreviewServerHook = (server: {
-  middlewares: Connect.Server
-  httpServer: http.Server
-}) => (() => void) | void | Promise<(() => void) | void>
+export type PreviewServerHook = (
+  this: void,
+  server: {
+    middlewares: Connect.Server
+    httpServer: http.Server
+  }
+) => (() => void) | void | Promise<(() => void) | void>
 
 /**
  * Starts the Vite server in preview mode, to simulate a production deployment

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

@@ -151,6 +151,7 @@ export interface FileSystemServeOptions {
 }
 
 export type ServerHook = (
+  this: void,
   server: ViteDevServer
 ) => (() => void) | void | Promise<(() => void) | void>