Preserve POSIX paths in archive entries and query name hashes

Author: sdkennedy2

packages/plugins/apps/src/assets.ts

@@ -60,7 +60,9 @@ export const collectAssets = async (patterns: string[], cwd: string): Promise<As
 
         return {
             absolutePath: matches[index],
-            relativePath: strippedPath,
+            // Normalize to forward slashes so archive entries are valid
+            // on all platforms (ZIP spec requires POSIX separators).
+            relativePath: strippedPath.split(path.sep).join('/'),
         };
     });
 

packages/plugins/apps/src/backend/encodeQueryName.ts

@@ -3,6 +3,7 @@
 // Copyright 2019-Present Datadog, Inc.
 
 import { createHash } from 'crypto';
+import path from 'path';
 
 import type { BackendFunction } from './discovery';
 
@@ -15,6 +16,8 @@ import type { BackendFunction } from './discovery';
  * proxy codegen, the production build, and the dev server.
  */
 export function encodeQueryName(ref: Pick<BackendFunction, 'relativePath' | 'name'>): string {
-    const pathHash = createHash('sha256').update(ref.relativePath).digest('hex');
+    // Normalize to forward slashes so the hash is consistent across platforms.
+    const posixPath = ref.relativePath.split(path.sep).join('/');
+    const pathHash = createHash('sha256').update(posixPath).digest('hex');
     return `${pathHash}.${ref.name}`;
 }

packages/plugins/apps/src/index.ts

@@ -122,17 +122,18 @@ Either:
             const frontendOnly = assets.filter((a) => !backendPaths.has(a.absolutePath));
 
             // Prefix all frontend assets with frontend/.
+            // Use POSIX joins — archive entries must use forward slashes.
             const allAssets: Asset[] = frontendOnly.map((asset) => ({
                 ...asset,
-                relativePath: path.join('frontend', asset.relativePath),
+                relativePath: `frontend/${asset.relativePath}`,
             }));
 
             // Append backend assets from the outputs map populated during the build.
             // Keys are encoded query names ({hash(path)}.{name}).
             for (const [bundleName, absolutePath] of backendOutputs) {
                 allAssets.push({
                     absolutePath,
-                    relativePath: path.join('backend', `${bundleName}.js`),
+                    relativePath: `backend/${bundleName}.js`,
                 });
             }