chore: modify getFile api tyle declare

index.ts

@@ -31,7 +31,7 @@ declare class JensenType {
         fileName: string,
         length: number,
         on?: (msg: Uint8Array | 'fail') => void,
-        onprogress?: (size: number, dataView: DataView) => void
+        onprogress?: (size: number, msg: Uint8Array | null) => void
     ) => void;
     getFileBlock: (
         fileName: string,