feat: Implement callback that is called after parent build is completed

docs/config/plugin-options.md

@@ -168,3 +168,11 @@ bundleInfoJsonPath?: string
 ```
 
 If set, the plugin will write a JSON file containing information about the built bundles to the specified path in the output directory. This can for example be useful for dynamically injecting content scripts/styles from background scripts.
+
+## `onBundleReady`
+
+```ts
+onBundleReady?: () => void | Promise<void>
+```
+
+This callback is invoked after the main (parent) build completes, but not for child builds triggered by different entry points. Use it to perform additional actions when the main extension bundle is ready in both development (serve) and production (build) modes.

packages/vite-plugin-web-extension/src/index.ts

@@ -27,6 +27,7 @@ export default function webExtension(
     transformManifest: options.transformManifest,
     webExtConfig: options.webExtConfig,
     bundleInfoJsonPath: options.bundleInfoJsonPath,
+    onBundleReady: options.onBundleReady,
     verbose: process.argv.includes("-d") || process.argv.includes("--debug"),
     disableColors:
       process.env.CI === "true" || process.env.DISABLE_COLORS === "true", // TODO: document env var

packages/vite-plugin-web-extension/src/options.ts

@@ -91,6 +91,11 @@ export interface UserOptions {
    * Output path to a JSON file containing information about the generated bundles.
    */
   bundleInfoJsonPath?: string;
+
+  /**
+   * Action to be executed after build ends.
+   */
+  onBundleReady?: () => void | Promise<void>;
 }
 
 /**
@@ -115,6 +120,7 @@ export interface ResolvedOptions {
   disableColors: boolean;
   webExtConfig?: any;
   bundleInfoJsonPath?: string;
+  onBundleReady?: () => void | Promise<void>;
 }
 
 /**

packages/vite-plugin-web-extension/src/plugins/manifest-loader-plugin.ts

@@ -153,6 +153,10 @@ export function manifestLoaderPlugin(options: ResolvedOptions): vite.Plugin {
       });
     }
 
+    if (options.onBundleReady) {
+      await options.onBundleReady();
+    }
+
     await copyPublicDirToOutDir({ mode, paths });
 
     // In dev mode, open up the browser immediately after the build context is finished with the