errors in node_modules after install

Compiled with problems:
×
ERROR in node_modules/ecctrl/src/EcctrlJoystick.tsx:22:11
TS2322: Type 'HTMLDivElement | null' is not assignable to type 'HTMLDivElement'.
Type 'null' is not assignable to type 'HTMLDivElement'.
20 |
21 | const [windowSize, setWindowSize] = useState({ innerHeight, innerWidth })

22 | const joystickDiv: HTMLDivElement = document.querySelector("#ecctrl-joystick")
| ^^^^^^^^^^^
23 |
24 | /**
25 | * Animation preset
ERROR in node_modules/ecctrl/src/EcctrlJoystick.tsx:119:9
TS18047: 'window.visualViewport' is possibly 'null'.
117 | joystickDiv.addEventListener("touchend", onTouchEnd)
118 |
119 | window.visualViewport.addEventListener("resize", onWindowResize)
| ^^^^^^^^^^^^^^^^^^^^^
120 |
121 | return () => {
122 | joystickDiv.removeEventListener("touchmove", onTouchMove)
ERROR in node_modules/ecctrl/src/EcctrlJoystick.tsx:124:13
TS18047: 'window.visualViewport' is possibly 'null'.
122 | joystickDiv.removeEventListener("touchmove", onTouchMove)
123 | joystickDiv.removeEventListener("touchend", onTouchEnd)
124 | window.visualViewport.removeEventListener("resize", onWindowResize)
| ^^^^^^^^^^^^^^^^^^^^^
125 | }
126 | })
127 |
ERROR in node_modules/ecctrl/src/EcctrlJoystick.tsx:163:11
TS2322: Type 'HTMLDivElement | null' is not assignable to type 'HTMLDivElement'.
Type 'null' is not assignable to type 'HTMLDivElement'.
161 | const buttonTop5Material = useMemo(() => new THREE.MeshNormalMaterial({ transparent: true, opacity: 0.5 }), [])
162 |
163 | const buttonDiv: HTMLDivElement = document.querySelector("#ecctrl-button")
| ^^^^^^^^^
164 |
165 | /**
166 | * Animation preset

Start in node_modules/ecctrl/src/EcctrlJoystick.tsx at the reported lines and reproduce the install/build errors. Check the nullability of querySelector results and window.visualViewport; done means the reported TypeScript errors no longer appear after installation.