Fix metafiles in child directory (#8504)

Co-authored-by: Greg Brimble <gbrimble@cloudflare.com>

Author: workers-devprod

.changeset/mighty-lies-see.md

@@ -0,0 +1,5 @@
+---
+"wrangler": patch
+---
+
+Fix Workers Assets metafiles (`_headers` and `_redirects`) resolution when running Wrangler from a different directory

packages/wrangler/src/__tests__/deploy.test.ts

@@ -5227,10 +5227,12 @@ addEventListener('fetch', event => {});`
 		});
 
 		it("should ignore assets that match patterns in an .assetsignore file in the root of the assets directory", async () => {
+			const redirectsContent = "/foo /bar";
+			const headersContent = "/some-path\nX-Header: Custom-Value";
 			const assets = [
 				{ filePath: ".assetsignore", content: "*.bak\nsub-dir" },
-				{ filePath: "_redirects", content: "/foo /bar" },
-				{ filePath: "_headers", content: "/some-path\nX-Header: Custom-Value" },
+				{ filePath: "_redirects", content: redirectsContent },
+				{ filePath: "_headers", content: headersContent },
 				{ filePath: "file-1.txt", content: "Content of file-1" },
 				{ filePath: "file-2.bak", content: "Content of file-2" },
 				{ filePath: "file-3.txt", content: "Content of file-3" },
@@ -5250,7 +5252,10 @@ addEventListener('fetch', event => {});`
 			mockUploadWorkerRequest({
 				expectedAssets: {
 					jwt: "<<aus-completion-token>>",
-					config: {},
+					config: {
+						_headers: headersContent,
+						_redirects: redirectsContent,
+					},
 				},
 				expectedType: "none",
 			});

packages/wrangler/src/assets.ts

@@ -446,8 +446,10 @@ export function getAssetsOptions(
 		}
 	}
 
-	const redirects = maybeGetFile(path.join(directory, REDIRECTS_FILENAME));
-	const headers = maybeGetFile(path.join(directory, HEADERS_FILENAME));
+	const redirects = maybeGetFile(
+		path.join(resolvedAssetsPath, REDIRECTS_FILENAME)
+	);
+	const headers = maybeGetFile(path.join(resolvedAssetsPath, HEADERS_FILENAME));
 
 	// defaults are set in asset worker
 	const assetConfig: AssetConfig = {