change that introduces fix to issue 93

src/__tests__/unit/main.test.ts

@@ -54,6 +54,28 @@ describe("getMetaData", () => {
     expect(result.feedbackMechanism).toContain("/issues");
   });
 
+  it("preserves existing languages over GitHub-detected languages", async () => {
+    const deps = createMockDeps();
+    const helpers = createHelpers(deps);
+
+    const existing = {
+      ...validCodeJSON,
+      languages: ["TypeScript", "Markdown"],
+    } as any;
+    const result = await getMetaData(helpers, deps, existing);
+
+    expect(result.languages).toEqual(["TypeScript", "Markdown"]);
+  });
+
+  it("falls back to GitHub-detected languages when none exist", async () => {
+    const deps = createMockDeps();
+    const helpers = createHelpers(deps);
+
+    const result = await getMetaData(helpers, deps, null);
+
+    expect(result.languages).toEqual(["TypeScript", "JavaScript"]);
+  });
+
   it("sets Archival status when isArchived", async () => {
     const deps = createMockDeps({ isArchived: true });
     const helpers = createHelpers(deps);

src/main.ts

@@ -112,6 +112,13 @@ async function getMetaData(
     ? partialCodeJSON.description
     : existingCodeJSON?.description || "";
 
+  // preserve manually curated languages when they already exist in code.json,
+  // and only fall back to GitHub detected languages for new repositories.
+  const languages =
+    existingCodeJSON?.languages && existingCodeJSON.languages.length > 0
+      ? existingCodeJSON.languages
+      : partialCodeJSON.languages;
+
   // only update tags if we have new ones from GitHub Topics, otherwise keep existing
   const shouldUpdateTags =
     partialCodeJSON.tags && partialCodeJSON.tags.length > 0;
@@ -155,7 +162,7 @@ async function getMetaData(
     repositoryURL: partialCodeJSON.repositoryURL,
     repositoryVisibility: partialCodeJSON.repositoryVisibility,
     laborHours: partialCodeJSON.laborHours,
-    languages: partialCodeJSON.languages,
+    languages: languages,
     reuseFrequency: {
       forks: partialCodeJSON.reuseFrequency?.forks ?? 0,
       clones: existingCodeJSON?.reuseFrequency?.clones ?? 0,