Update outputBundleConfig to include outputfiles (#318)

* update output files

* lint

Author: Yuangwang

README.md

@@ -18,7 +18,7 @@ Any framework that can generate a build output in accordance with the App Hostin
 The output bundle primarily consists of a `bundle.yaml` file that sits inside of the `.apphosting` directory. This bundle.yaml contains all the ways that frameworks can configure App Hosting when users deploy their applications.
 
 > [!NOTE]  
-> App Hosting technically supports all all node applications, but no custom framework features will be enabled without the output bundle.
+> App Hosting technically supports all node applications, but no custom framework features will be enabled without the output bundle.
 
 ## Output bundle Schema
 
@@ -37,6 +37,7 @@ interface OutputBundle {
   version: "v1"
   runConfig: RunConfig;
   metadata: Metadata;
+  outputFiles?: OutputFiles;
 }
 ```
 
@@ -108,12 +109,44 @@ interface Metadata {
 | `framework` | `string` | Name of the framework that is being supported | y |
 | `frameworkVersion` | `string` |Version of the framework that is being supported | n |
 
+### OutputFiles
+
+OutputFiles is an optional field to configure outputFiles and optimize server files + static assets.
+
+```typescript
+interface OutputFiles {
+  serverApp: ServerApp
+}
+
+```
+
+| Field  | Type | Description | Required? |
+| ---------- | ------- | - | - |
+| `serverApp` | `ServerApp` | ServerApp holds configurations related to the serving files at runtime from Cloud Run | y |
+
+### ServerApp
+
+OutputFiles is an optional field to configure outputFiles and optimize server files + static assets.
+
+```typescript
+interface ServerApp {
+  include:  string[]
+}
+
+```
+
+| Field  | Type | Description | Required? |
+| ---------- | ------- | - | - |
+| `include` | `string[]` | include holds a list of directories + files relative to the app root dir that frameworks need to deploy to the App Hosting server, generally this will be the output/dist directory (e.g. .output or dist). In the case that the framework wants to include all files they can use [“.”] | y |
+
+## Sample
+
 Here is a sample `.apphosting/bundle.yaml` file putting all this together:
 
 ```yaml
 version: v1
 runConfig:
-  runCommand: 'node dist/index.js'
+  runCommand: node dist/index.js
   environmentVariables:
     - variable: VAR
       value: 8080
@@ -123,6 +156,12 @@ runConfig:
   memoryMiB: 512
   minInstances: 0
   maxInstances: 14
+
+outputFiles:
+  serverApp:
+    include: 
+      - dist
+      - .output
 
 metadata:
   adapterPackageName: npm-name

packages/@apphosting/adapter-nextjs/src/overrides.ts

@@ -72,10 +72,9 @@ export async function overrideNextConfig(projectRoot: string, nextConfigFileName
  * Current overrides include:
  * - images.unoptimized = true, unless user explicitly sets images.unoptimized to false or
  * is using a custom image loader.
- *
  * @param importStatement The import statement for the original config.
  * @param fileExtension The file extension of the original config. Use ".js", ".mjs", or ".ts"
- * @returns The custom Next.js config.
+ * @return The custom Next.js config.
  */
 function getCustomNextConfig(importStatement: string, fileExtension: string) {
   return `
@@ -150,7 +149,6 @@ export async function validateNextConfigOverride(
  * This function adds the following headers to all routes:
  * - x-fah-adapter: The Firebase App Hosting adapter version used to build the app.
  * - x-fah-middleware: When middleware is enabled.
- *
  * @param appPath The path to the app directory.
  * @param distDir The path to the dist directory.
  * @param adapterMetadata The adapter metadata.

packages/@apphosting/adapter-nextjs/src/utils.ts

@@ -42,7 +42,7 @@ export async function loadConfig(root: string, projectRoot: string): Promise<Nex
  * Loads the route manifest from the standalone directory.
  * @param standalonePath The path to the standalone directory.
  * @param distDir The path to the dist directory.
- * @returns The route manifest.
+ * @return The route manifest.
  */
 export function loadRouteManifest(standalonePath: string, distDir: string): RoutesManifest {
   const manifestPath = join(standalonePath, distDir, ROUTES_MANIFEST);
@@ -54,7 +54,7 @@ export function loadRouteManifest(standalonePath: string, distDir: string): Rout
  * Loads the middleware manifest from the standalone directory.
  * @param standalonePath The path to the standalone directory.
  * @param distDir The path to the dist directory.
- * @returns The middleware manifest.
+ * @return The middleware manifest.
  */
 export function loadMiddlewareManifest(
   standalonePath: string,

packages/@apphosting/common/src/index.ts

@@ -5,6 +5,7 @@ export interface OutputBundleConfig {
   version: "v1";
   runConfig: RunConfig;
   metadata: Metadata;
+  outputFiles?: OutputFiles;
 }
 
 // Fields needed to configure the App Hosting server
@@ -38,6 +39,18 @@ export interface Metadata {
   frameworkVersion?: string;
 }
 
+// Optional outputFiles to configure outputFiles and optimize server files + static assets.
+// If this is not set then all of the source code will be uploaded
+interface OutputFiles {
+  serverApp: ServerApp;
+}
+
+// ServerApp holds a list of directories + files relative to the app root dir that frameworks need to deploy to the App Hosting server,
+// generally this will be the output/dist directory (e.g. .output or dist). To include all files set this to [“.”]
+interface ServerApp {
+  include: string[];
+}
+
 // Represents a single environment variable.
 export interface EnvVarConfig {
   // Name of the variable