[No QA] [TS migration] Migrate 'localFileDownload' lib to TypeScript

src/libs/localFileDownload/index.android.js → src/libs/localFileDownload/index.android.ts

@@ -1,15 +1,13 @@
 import RNFetchBlob from 'react-native-blob-util';
 import * as FileUtils from '../fileDownload/FileUtils';
+import LocalFileDownload from './types';
 
 /**
  * Writes a local file to the app's internal directory with the given fileName
  * and textContent, so we're able to copy it to the Android public download dir.
  * After the file is copied, it is removed from the internal dir.
- *
- * @param {String} fileName
- * @param {String} textContent
  */
-export default function localFileDownload(fileName, textContent) {
+export default function localFileDownload({fileName, textContent}: LocalFileDownload) {
     const newFileName = FileUtils.appendTimeToFileName(fileName);
     const dir = RNFetchBlob.fs.dirs.DocumentDir;
     const path = `${dir}/${newFileName}.txt`;

src/libs/localFileDownload/index.ios.js → src/libs/localFileDownload/index.ios.ts

@@ -1,16 +1,14 @@
 import {Share} from 'react-native';
 import RNFetchBlob from 'react-native-blob-util';
 import * as FileUtils from '../fileDownload/FileUtils';
+import LocalFileDownload from './types';
 
 /**
  * Writes a local file to the app's internal directory with the given fileName
  * and textContent, so we're able to share it using iOS' share API.
  * After the file is shared, it is removed from the internal dir.
- *
- * @param {String} fileName
- * @param {String} textContent
  */
-export default function localFileDownload(fileName, textContent) {
+export default function localFileDownload({fileName, textContent}: LocalFileDownload) {
     const newFileName = FileUtils.appendTimeToFileName(fileName);
     const dir = RNFetchBlob.fs.dirs.DocumentDir;
     const path = `${dir}/${newFileName}.txt`;

src/libs/localFileDownload/index.js → src/libs/localFileDownload/index.ts

@@ -1,14 +1,12 @@
 import * as FileUtils from '../fileDownload/FileUtils';
+import LocalFileDownload from './types';
 
 /**
  * Creates a Blob with the given fileName and textContent, then dynamically
  * creates a temporary anchor, just to programmatically click it, so the file
  * is downloaded by the browser.
- *
- * @param {String} fileName
- * @param {String} textContent
  */
-export default function localFileDownload(fileName, textContent) {
+export default function localFileDownload({fileName, textContent}: LocalFileDownload) {
     const blob = new Blob([textContent], {type: 'text/plain'});
     const url = URL.createObjectURL(blob);
     const link = document.createElement('a');

src/libs/localFileDownload/types.ts

@@ -0,0 +1,5 @@
+type LocalFileDownload = {
+    fileName: string;
+    textContent: string;
+};
+export default LocalFileDownload;