fix: typing

Author: NorbertKlockiewicz

packages/react-native-executorch/src/hooks/natural_language_processing/useLLM.ts

@@ -51,7 +51,7 @@ export const useLLM = ({ model, preventLoad = false }: LLMProps): LLMType => {
         await controllerInstance.load({
           modelSource: model.modelSource,
           tokenizerSource: model.tokenizerSource,
-          tokenizerConfigSource: model.tokenizerConfigSource,
+          tokenizerConfigSource: model.tokenizerConfigSource!,
           onDownloadProgressCallback: setDownloadProgress,
         });
       } catch (e) {

packages/react-native-executorch/src/types/llm.ts

@@ -19,7 +19,7 @@ export interface LLMProps {
     /**
      * `ResourceSource` pointing to the JSON file which contains the tokenizer config.
      */
-    tokenizerConfigSource: ResourceSource;
+    tokenizerConfigSource?: ResourceSource;
   };
   /**
    * Boolean that can prevent automatic model loading (and downloading the data if you load it for the first time) after running the hook.