chore: Fix ts definition

Author: zombieJ

src/AjaxUploader.tsx

@@ -112,7 +112,7 @@ class AjaxUploader extends Component<UploadProps> {
         .then(processedFile => {
           const processedFileType = Object.prototype.toString.call(processedFile);
           if (processedFileType === '[object File]' || processedFileType === '[object Blob]') {
-            this.post(processedFile);
+            this.post(processedFile as RcFile);
             return;
           }
           this.post(file);

src/interface.tsx

@@ -20,8 +20,8 @@ export interface UploadProps
   onError?: (error: Error, ret: object, file: RcFile) => void;
   onSuccess?: (response: object, file: RcFile, xhr: object) => void;
   onProgress?: (event: UploadProgressEvent, file: RcFile) => void;
-  beforeUpload?: (file: RcFile, FileList: RcFile[]) => boolean | Promise<RcFile>;
-  customRequest?: () => void;
+  beforeUpload?: (file: RcFile, FileList: RcFile[]) => boolean | Promise<void | File | Blob>;
+  customRequest?: (option: UploadRequestOption) => void;
   withCredentials?: boolean;
   openFileDialogOnClick?: boolean;
   transformFile?: (file: RcFile) => string | Blob | RcFile | PromiseLike<string | Blob | RcFile>;