Initial implementation of localization

lib/i18n/types.ts

@@ -0,0 +1,21 @@
+/**
+ * Type definitions for translation keys
+ * 
+ * These types provide type safety when accessing translation keys.
+ * The actual types are inferred from the JSON files in messages/en/
+ */
+
+// Import the message structure to ensure type safety
+import type messages from "../../messages/en/index";
+
+export type Messages = typeof messages;
+
+// Helper type for nested key paths
+export type NestedKeyOf<ObjectType extends object> = {
+  [Key in keyof ObjectType & (string | number)]: ObjectType[Key] extends object
+    ? `${Key}` | `${Key}.${NestedKeyOf<ObjectType[Key]>}`
+    : `${Key}`;
+}[keyof ObjectType & (string | number)];
+
+// Type for all possible translation keys
+export type TranslationKey = NestedKeyOf<Messages>;