Merge pull request #5764 from BlueWallet/ts

REF: JS modules to TS

__mocks__/react-native-image-picker.js

@@ -1,4 +1,4 @@
-import {NativeModules} from 'react-native';
+import { NativeModules } from 'react-native';
 
 // Mock the ImagePickerManager native module to allow us to unit test the JavaScript code
 NativeModules.ImagePickerManager = {

blue_modules/constants.js

@@ -1,5 +0,0 @@
-/**
- * Let's keep config vars, constants and definitions here
- */
-
-export const groundControlUri = 'https://groundcontrol-bluewallet.herokuapp.com/';

blue_modules/constants.ts

@@ -0,0 +1,5 @@
+/**
+ * Let's keep config vars, constants and definitions here
+ */
+
+export const groundControlUri: string = 'https://groundcontrol-bluewallet.herokuapp.com/';

blue_modules/debounce.js

@@ -1,14 +0,0 @@
-// https://levelup.gitconnected.com/debounce-in-javascript-improve-your-applications-performance-5b01855e086
-const debounce = (func, wait) => {
-  let timeout;
-  return function executedFunction(...args) {
-    const later = () => {
-      timeout = null;
-      func(...args);
-    };
-    clearTimeout(timeout);
-    timeout = setTimeout(later, wait);
-  };
-};
-
-export default debounce;

blue_modules/debounce.ts

@@ -0,0 +1,16 @@
+// https://levelup.gitconnected.com/debounce-in-javascript-improve-your-applications-performance-5b01855e086
+const debounce = <T extends (...args: any[]) => void>(func: T, wait: number) => {
+  let timeout: NodeJS.Timeout | null;
+  return function executedFunction(this: ThisParameterType<T>, ...args: Parameters<T>) {
+    const later = () => {
+      timeout = null;
+      func.apply(this, args);
+    };
+    if (timeout) {
+      clearTimeout(timeout);
+    }
+    timeout = setTimeout(later, wait);
+  };
+};
+
+export default debounce;