[react-native-share] adding filename type definition (#38646)

* chore(filename): adding filename type to rn-share

* chore(test): implementing test to share-single with filename

* feat(definitions-by): adding username to definitions on rn-share

types/react-native-share/index.d.ts

@@ -2,14 +2,13 @@
 // Project: https://github.com/react-native-community/react-native-share#readme
 // Definitions by: Mark Nelissen <https://github.com/marknelissen>
 //                 pera <https://github.com/santiagofm>
+//                 MateusAndrade <https://github.com/MateusAndrade>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 // TypeScript Version: 2.1
 
 declare namespace Share {
     function open(options: Options | MultipleOptions): Promise<OpenReturn>;
-    function shareSingle(
-        options: Options & { social: SupportedSocialApps }
-    ): Promise<ShareSingleReturn>;
+    function shareSingle(options: Options & { social: SupportedSocialApps }): Promise<ShareSingleReturn>;
 }
 
 export default Share;
@@ -30,6 +29,7 @@ export interface Options {
     message?: string;
     title?: string;
     subject?: string;
+    filename?: string;
     excludedActivityTypes?: string;
     failOnCancel?: boolean;
     showAppsToView?: boolean;
@@ -47,10 +47,10 @@ export interface MultipleOptions {
 }
 
 export type SupportedSocialApps =
-    | "facebook"
-    | "pagesmanager"
-    | "twitter"
-    | "whatsapp"
-    | "instagram"
-    | "googleplus"
-    | "email";
+    | 'facebook'
+    | 'pagesmanager'
+    | 'twitter'
+    | 'whatsapp'
+    | 'instagram'
+    | 'googleplus'
+    | 'email';

types/react-native-share/react-native-share-tests.ts

@@ -40,3 +40,14 @@ Share.shareSingle({
     subject: '',
     social: 'facebook',
 });
+
+// $ExpectType Promise<ShareSingleReturn>
+Share.shareSingle({
+    url: '',
+    type: '',
+    message: '',
+    title: '',
+    subject: '',
+    filename: 'test',
+    social: 'facebook',
+});