[TS migration] Migrate 'setSelection' lib to TypeScript

src/libs/setSelection/index.native.ts

@@ -0,0 +1,13 @@
+import SetSelection from './types';
+
+const setSelection: SetSelection = (textInput, start, end) => {
+    if (!textInput) {
+        return;
+    }
+
+    if ('setSelection' in textInput) {
+        textInput.setSelection(start, end);
+    }
+};
+
+export default setSelection;

src/libs/setSelection/index.ts

@@ -0,0 +1,13 @@
+import SetSelection from './types';
+
+const setSelection: SetSelection = (textInput, start, end) => {
+    if (!textInput) {
+        return;
+    }
+
+    if ('setSelectionRange' in textInput) {
+        textInput.setSelectionRange(start, end);
+    }
+};
+
+export default setSelection;

src/libs/setSelection/types.ts

@@ -0,0 +1,5 @@
+import {TextInput} from 'react-native';
+
+type SetSelection = (textInput: TextInput | HTMLInputElement, start: number, end: number) => void;
+
+export default SetSelection;

src/types/modules/react-native.d.ts

@@ -0,0 +1,9 @@
+/* eslint-disable @typescript-eslint/consistent-type-definitions */
+import 'react-native';
+
+declare module 'react-native' {
+    interface TextInput {
+        // Typescript type declaration is missing in React Native for setting text selection.
+        setSelection: (start: number, end: number) => void;
+    }
+}