From 077ae9cea51e26ef4e71435fdaa41e659dcb0cfc Mon Sep 17 00:00:00 2001
From: Jun Shindo <46585162+jay-es@users.noreply.github.com>
Date: Sun, 20 Oct 2024 15:47:27 +0900
Subject: [PATCH] docs(backend-integration): add an example `importedChunks`
 (#1634)

---
 guide/backend-integration.md | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/guide/backend-integration.md b/guide/backend-integration.md
index 7697b793..c3f2f73d 100644
--- a/guide/backend-integration.md
+++ b/guide/backend-integration.md
@@ -151,3 +151,37 @@
    <!-- オプション -->
    <link rel="modulepreload" href="assets/shared-B7PI925R.js" />
    ```
+
+   ::: details `importedChunks` の疑似実装
+   TypeScript での `importedChunks` の疑似実装の例（これは、プログラミング言語とテンプレート言語に合わせて調整する必要があります）:
+
+   ```ts
+   import type { Manifest, ManifestChunk } from 'vite'
+
+   export default function importedChunks(
+     manifest: Manifest,
+     name: string,
+   ): ManifestChunk[] {
+     const seen = new Set<string>()
+
+     function getImportedChunks(chunk: ManifestChunk): ManifestChunk[] {
+       const chunks: ManifestChunk[] = []
+       for (const file of chunk.imports ?? []) {
+         const importee = manifest[file]
+         if (seen.has(file)) {
+           continue
+         }
+         seen.add(file)
+
+         chunks.push(...getImportedChunks(importee))
+         chunks.push(importee)
+       }
+
+       return chunks
+     }
+
+     return getImportedChunks(manifest[name])
+   }
+   ```
+
+   :::