Added pickDirectory() implementation for Windows (proper PR)

README.md

@@ -38,7 +38,7 @@ If you are using RN >= 0.63, only run `pod install` from the ios directory. Then
 
 Use `pickMultiple`, `pickSingle` or `pick` to open a document picker for the user to select file(s). All methods return a Promise.
 
-#### [Android only] `DocumentPicker.pickDirectory()`
+#### [Android and Windows only] `DocumentPicker.pickDirectory()`
 
 Open a system directory picker. Returns a promise that resolves to (`{ uri: string }`) of the directory selected by user.
 
@@ -77,7 +77,7 @@ If specified, the picked file is copied to `NSCachesDirectory` / `NSDocumentDire
 
 This should help if you need to work with the file(s) later on, because by default, [the picked documents are temporary files. They remain available only until your application terminates](https://developer.apple.com/documentation/uikit/uidocumentpickerdelegate/2902364-documentpicker). This may impact performance for large files, so keep this in mind if you expect users to pick particularly large files and your app does not need immediate read access.
 
-##### [UWP only] `readContent`:`boolean`
+##### [Windows only] `readContent`:`boolean`
 
 Defaults to `false`. If `readContent` is set to true the content of the picked file/files will be read and supplied in the result object.
 
@@ -118,7 +118,7 @@ The display name of the file. _This is normally the filename of the file, but An
 
 The file size of the document. _On Android some DocumentProviders may not provide this information for a document._
 
-##### [UWP only] `content`:
+##### [Windows only] `content`:
 
 The base64 encoded content of the picked file if the option `readContent` was set to `true`.
 

src/index.tsx

@@ -47,10 +47,10 @@ type DocumentPickerOptions<OS extends SupportedPlatforms> = {
 }
 
 export function pickDirectory(): Promise<DirectoryPickerResponse | null> {
-  if (Platform.OS === 'android') {
+  if (Platform.OS === 'android' || Platform.OS === 'windows') {
     return RNDocumentPicker.pickDirectory()
   } else {
-    // TODO windows impl
+    // TODO iOS impl
     return Promise.resolve(null)
   }
 }