Add Say#locales

Author: k0d13

packages/integration/src/runtime.ts

@@ -89,6 +89,13 @@ export class Say<
     return this.#messages.get(this.locale)!;
   }
 
+  /**
+   * All available locales.
+   */
+  get locales() {
+    return this.#locales;
+  }
+
   /**
    * Loads messages for the given locales.
    * If no locales are provided, all available locales are loaded.
@@ -175,7 +182,7 @@ export class Say<
     }) as unknown as this;
   }
 
-    /**
+  /**
    * Make this `Say` instance immutable.
    */
   freeze() {