Use typescript command from devDependencies

Author: WebDevMichael

package.json

@@ -21,10 +21,11 @@
   "devDependencies": {
     "@types/node": "^11.10.5",
     "@types/react": "^16.8.6",
-    "@types/react-dom": "^16.8.2"
+    "@types/react-dom": "^16.8.2",
+    "typescript": "^3.5.2"
   },
   "scripts": {
-    "build": "rm -rf ./lib && tsc",
+    "build": "rm -rf ./lib && npx tsc",
     "test": "echo \"Error: no test specified\" && exit 1"
   },
   "repository": {