typescriptアセットのcache-controlを修正、404の場合もダミーのファイルを返すようにする

Author: na-trium-144

next.config.ts

@@ -17,9 +17,9 @@ const nextConfig: NextConfig = {
   },
   serverExternalPackages: ["@prisma/client", ".prisma/client"],
   async headers() {
-    // pyodideをworkerで動作させるために必要
     return [
       {
+        // pyodideをworkerで動作させるために必要
         source: "/:path*",
         headers: [
           {
@@ -32,6 +32,15 @@ const nextConfig: NextConfig = {
           },
         ],
       },
+      {
+        source: "/typescript/:path*",
+        headers: [
+          {
+            key: "Cache-Control",
+            value: "public, max-age=31536000, immutable",
+          },
+        ],
+      },
     ];
   },
   webpack: (config, { isServer }) => {

scripts/copyAllDTSFiles.ts

@@ -14,10 +14,14 @@ await fs.mkdir(destDir, { recursive: true });
 for (const libFile of libFiles) {
   const srcPath = `./node_modules/typescript/lib/${libFile}`;
   const destPath = `${destDir}${libFile}`;
-  if(existsSync(srcPath)) {
+  if (existsSync(srcPath)) {
     await fs.copyFile(srcPath, destPath);
     console.log(`Copied ${libFile} to ${destPath}`);
   } else {
     console.warn(`Source file does not exist: ${srcPath}`);
+    await fs.writeFile(
+      destPath,
+      `// ${libFile} not found in node_modules/typescript/lib/`
+    );
   }
 }