update tests for configurable docx export locale

add test cases to ensure the locale option correctly updates default
language in generated .docx files and defaults to en-US when omitted

Author: Ovgodd

packages/xl-docx-exporter/src/docx/docxExporter.test.ts

@@ -28,7 +28,11 @@ describe("exporter", () => {
       }),
       docxDefaultSchemaMappings,
     );
-    const doc = await exporter.toDocxJsDocument(testDocument);
+    const doc = await exporter.toDocxJsDocument(testDocument, {
+      sectionOptions: {},
+      documentOptions: {},
+      locale: "en-US",
+    });
 
     const blob = await Packer.toBlob(doc);
     const zip = new ZipReader(new BlobReader(blob));
@@ -56,6 +60,7 @@ describe("exporter", () => {
       );
 
       const doc = await exporter.toDocxJsDocument(testDocument, {
+        locale: "en-US",
         documentOptions: {
           creator: "John Doe",
         },
@@ -181,6 +186,7 @@ describe("exporter", () => {
             ],
           },
         ]),
+        { sectionOptions: {}, documentOptions: {}, locale: "en-US" },
       );
 
       const blob = await Packer.toBlob(doc);

shared/util/fileUtil.ts

@@ -36,6 +36,12 @@ export async function loadFileBuffer(requireUrl: {
     if (url.startsWith("/@fs/")) {
       url = url.substring("/@fs".length);
     }
+    // On Windows, vite/vitest may yield paths like "/C:/..." after removing /@fs
+    // Node on Windows treats paths starting with "/" as relative to current drive,
+    // which would produce "C:\C:\...". Strip leading slash when followed by a drive letter.
+    if (/^\/[A-Za-z]:/.test(url)) {
+      url = url.slice(1);
+    }
     const buffer = fs.readFileSync(url);
     return buffer;
   } else {