Update packages/kit/src/core/generate_manifest/index.js

Author: Rich-Harris

packages/kit/src/core/generate_manifest/index.js

@@ -64,6 +64,7 @@ export function generate_manifest({ build_data, relative_path, routes, format =
 
 	// prettier-ignore
 	return `{
+		appDir: ${s(build_data.app_dir)},
 		assets: new Set(${s(assets)}),
 		mimeTypes: ${s(get_mime_lookup(build_data.manifest_data))},
 		_: {