import wheel = require("wheel"); import { addWheelListener, removeWheelListener } from "wheel"; // Test 'wheel' function and module const wheelListener1 = (event: WheelEvent) => { event.preventDefault(); wheel.removeWheelListener(document, wheelListener1); }; wheel(document, wheelListener1); wheel.addWheelListener(document, wheelListener1); // Test 'addWheelListener' and 'removeWheelListener' functions. const wheelListener2 = (event: WheelEvent) => { event.preventDefault(); removeWheelListener(document, wheelListener2); }; addWheelListener(document, wheelListener2);