(#262) Upgraded to Typescript 4.4.2 with minor adjustments

Author: s1hofmann

Diff for: lib/keyboard.class.ts

@@ -4,7 +4,7 @@ import { sleep } from "./sleep.function";
 
 type StringOrKey = string[] | Key[];
 
-const inputIsString = (input: string[] | Key[]): input is string[] => {
+const inputIsString = (input: (string | Key)[]): input is string[] => {
   return input.every((elem: string | Key) => typeof elem === "string");
 };
 

Diff for: lib/sleep.function.ts

@@ -1,9 +1,9 @@
 export const sleep = async (ms: number) => {
-  return new Promise(resolve => setTimeout(resolve, ms));
+  return new Promise<void>(resolve => setTimeout(resolve, ms));
 };
 
 export const busyWaitForNanoSeconds = (duration: number) => {
-  return new Promise(res => {
+  return new Promise<void>(res => {
     const start = process.hrtime.bigint();
     let isWaiting = true;
     while (isWaiting) {

Diff for: package-lock.json

@@ -68,6 +68,7 @@
   "devDependencies": {
     "@types/clipboardy": "2.0.1",
     "@types/jest": "25.1.4",
+    "@types/node": "16.7.7",
     "istanbul-merge": "1.1.1",
     "jest": "25.1.0",
     "nyc": "15.1.0",
@@ -76,7 +77,7 @@
     "ts-jest": "25.4.0",
     "tslint": "6.1.0",
     "typedoc": "0.17.6",
-    "typescript": "3.8.3",
+    "typescript": "4.4.2",
     "version-bump-prompt": "6.0.2"
   }
 }