[TS migration] Migrate 'ReceiptUtils.js' lib to TypeScript

src/libs/ReceiptUtils.js → src/libs/ReceiptUtils.ts

@@ -1,19 +1,29 @@
 import Str from 'expensify-common/lib/str';
+import {ImageSourcePropType} from 'react-native';
 import * as FileUtils from './fileDownload/FileUtils';
 import CONST from '../CONST';
 import ReceiptHTML from '../../assets/images/receipt-html.png';
 import ReceiptDoc from '../../assets/images/receipt-doc.png';
 import ReceiptGeneric from '../../assets/images/receipt-generic.png';
 import ReceiptSVG from '../../assets/images/receipt-svg.png';
 
+type ThumbnailAndImageURI = {
+    image: ImageSourcePropType | string;
+    thumbnail: string | null;
+};
+
+type FileNameAndExtension = {
+    fileExtension?: string;
+    fileName?: string;
+};
+
 /**
  * Grab the appropriate receipt image and thumbnail URIs based on file type
  *
- * @param {String}  path      URI to image, i.e. blob:new.expensify.com/9ef3a018-4067-47c6-b29f-5f1bd35f213d or expensify.com/receipts/w_e616108497ef940b7210ec6beb5a462d01a878f4.jpg
- * @param {String}  filename  of uploaded image or last part of remote URI
- * @returns {Object}
+ * @param path URI to image, i.e. blob:new.expensify.com/9ef3a018-4067-47c6-b29f-5f1bd35f213d or expensify.com/receipts/w_e616108497ef940b7210ec6beb5a462d01a878f4.jpg
+ * @param filename of uploaded image or last part of remote URI
  */
-function getThumbnailAndImageURIs(path, filename) {
+function getThumbnailAndImageURIs(path: string, filename: string): ThumbnailAndImageURI {
     const isReceiptImage = Str.isImage(filename);
 
     // For local files, we won't have a thumbnail yet
@@ -25,7 +35,7 @@ function getThumbnailAndImageURIs(path, filename) {
         return {thumbnail: `${path}.1024.jpg`, image: path};
     }
 
-    const {fileExtension} = FileUtils.splitExtensionFromFileName(filename);
+    const {fileExtension} = FileUtils.splitExtensionFromFileName(filename) as FileNameAndExtension;
     let image = ReceiptGeneric;
     if (fileExtension === CONST.IOU.FILE_TYPES.HTML) {
         image = ReceiptHTML;
@@ -38,6 +48,7 @@ function getThumbnailAndImageURIs(path, filename) {
     if (fileExtension === CONST.IOU.FILE_TYPES.SVG) {
         image = ReceiptSVG;
     }
+
     return {thumbnail: null, image};
 }