adds a new astro:build:generated hook for SSG builds

packages/astro/src/@types/astro.ts

@@ -1149,6 +1149,7 @@ export interface AstroIntegration {
 		'astro:server:start'?: (options: { address: AddressInfo }) => void | Promise<void>;
 		'astro:server:done'?: () => void | Promise<void>;
 		'astro:build:ssr'?: (options: { manifest: SerializedSSRManifest }) => void | Promise<void>;
+		'astro:build:generated'?: (options: { dir: URL }) => void | Promise<void>;
 		'astro:build:start'?: (options: { buildConfig: BuildConfig }) => void | Promise<void>;
 		'astro:build:setup'?: (options: {
 			vite: ViteConfigWithSSR;

packages/astro/src/core/build/static-build.ts

@@ -6,7 +6,7 @@ import * as vite from 'vite';
 import { BuildInternals, createBuildInternals } from '../../core/build/internal.js';
 import { prependForwardSlash } from '../../core/path.js';
 import { emptyDir, isModeServerWithNoAdapter, removeDir } from '../../core/util.js';
-import { runHookBuildSetup } from '../../integrations/index.js';
+import { runHookBuildGenerated, runHookBuildSetup } from '../../integrations/index.js';
 import { PAGE_SCRIPT_ID } from '../../vite-plugin-scripts/index.js';
 import type { ViteConfigWithSSR } from '../create-vite';
 import { info } from '../logger/core.js';
@@ -98,6 +98,7 @@ Learn more: https://docs.astro.build/en/guides/server-side-rendering/
 	timer.generate = performance.now();
 	if (astroConfig.output === 'static') {
 		await generatePages(opts, internals);
+		await runHookBuildGenerated({ config: opts.astroConfig, buildConfig: opts.buildConfig, logging: opts.logging });
 		await cleanSsrOutput(opts);
 	} else {
 		// Inject the manifest

packages/astro/src/integrations/index.ts

@@ -243,6 +243,28 @@ export async function runHookBuildSetup({
 	}
 }
 
+export async function runHookBuildGenerated({
+	config,
+	buildConfig,
+	logging,
+}: {
+	config: AstroConfig,
+	buildConfig: BuildConfig,
+	logging: LogOptions,
+}) {
+	const dir = config.output === 'server' ? buildConfig.client : config.outDir;
+
+	for (const integration of config.integrations) {
+		if (integration?.hooks?.['astro:build:generated']) {
+			await withTakingALongTimeMsg({
+				name: integration.name,
+				hookResult: integration.hooks['astro:build:generated']({ dir }),
+				logging,
+			})
+		}
+	}
+}
+
 export async function runHookBuildSsr({
 	config,
 	manifest,

packages/integrations/image/src/index.ts

@@ -105,7 +105,7 @@ export default function integration(options: IntegrationOptions = {}): AstroInte
 						  }
 						: {};
 			},
-			'astro:build:done': async ({ dir }) => {
+			'astro:build:generated': async ({ dir }) => {
 				if (resolvedOptions.serviceEntryPoint === '@astrojs/image/squoosh') {
 					await copyWasmFiles(_config.output === 'static' ? dir : _buildConfig.server);
 				}

packages/integrations/image/src/vendor/squoosh/image-pool.ts

@@ -1,4 +1,5 @@
-import { cpus } from 'os'
+import { cpus } from 'node:os'
+import { fileURLToPath } from 'node:url';
 import { isMainThread } from 'node:worker_threads';
 import WorkerPool from '../../utils/workerPool.js';
 import * as impl from './impl.js';
@@ -22,7 +23,7 @@ const getWorker = execOnce(
 			// There will be at most 7 workers needed since each worker will take
       // at least 1 operation type.
       Math.max(1, Math.min(cpus().length - 1, 7)),
-			'./node_modules/@astrojs/image/dist/vendor/squoosh/image-pool.js'
+			fileURLToPath(import.meta.url)
 		);
 	}
 )