fix: correct null handling

Author: shuuji3

scripts/i18n-meta/update-en-meta-json.ts

@@ -21,9 +21,11 @@ export function updateEnMetaJson() {
   const oldEnMetaJson = getOldEnMetaJson(enMetaJsonPath)
 
   const currentCommitHash = getCurrentCommitHash()
-  const enMetaJson = currentCommitHash
-    ? makeEnMetaJson(oldEnMetaJson, newEnJson, currentCommitHash)
-    : ({} as EnMetaJson)
+  if (!currentCommitHash) {
+    console.error('❌ Commit hash missing. Skipping update to protect existing metadata.')
+    process.exit(1)
+  }
+  const enMetaJson = makeEnMetaJson(oldEnMetaJson, newEnJson, currentCommitHash)
 
   const hasChanges = checkTranslationChanges(oldEnMetaJson, enMetaJson)
   if (!hasChanges) {

scripts/i18n-meta/utils.ts

@@ -26,17 +26,14 @@ export function checkTranslationChanges(oldMeta: EnMetaJson, newMeta: EnMetaJson
   return JSON.stringify(oldObj) !== JSON.stringify(newObj)
 }
 
-export function createUpdatedEnMetaJson(
-  commitHash: string | null,
-  content: EnMetaJson,
-): EnMetaJson {
+export function createUpdatedEnMetaJson(commitHash: string, content: EnMetaJson): EnMetaJson {
   return {
     $meta: {
       last_updated_commit: commitHash,
       updated_at: new Date().toISOString(),
     },
     ...omitMeta(content),
-  } as EnMetaJson
+  }
 }
 
 function git(command: string) {