migrate file system api

src/platform/misc.web-check.d.ts

@@ -80,6 +80,11 @@ declare module 'expo-file-system' {
     slice(start?: number, end?: number, contentType?: string): Blob
     upload(url: string, options?: UploadOptions): Promise<UploadResult>
     createUploadTask(url: string, options?: UploadOptions): UploadTask
+    static downloadFileAsync(
+      url: string,
+      destination: File | Directory,
+      options?: DownloadOptions,
+    ): Promise<File>
     static createDownloadTask(
       url: string,
       destination: File | Directory,
@@ -92,6 +97,7 @@ declare module 'expo-file-system' {
   }
 
   export class Directory extends ExpoFileSystemDirectory {
+    static pickDirectoryAsync(initialUri?: string): Promise<Directory>
     constructor(...uris: (string | File | Directory)[])
     get parentDirectory(): Directory
     list(): (Directory | File)[]