Three.js: MeshStandardMaterial normalScale wrong typing

Description of the problem

I am working with the 104.0 version of three js and I found an interesting bug to be absolutely solved.
The typing for the normalScale of the MeshStandardMaterial is totally wrong. Here is written that is "number" but that's totally wrong it should be Vector2 like all the types of normalScale.

ES. The types of the phong material for normalScale is a Vector2.

export class MeshPhongMaterial extends Material {
constructor(parameters?: MeshPhongMaterialParameters);

color: Color;
specular: Color;
shininess: number;
....
normalScale: Vector2;

On the other hand, the type for the MeshStandardMaterial:

export class MeshStandardMaterial extends Material {
constructor(parameters?: MeshStandardMaterialParameters);

defines: any;
color: Color;
roughness: number;
metalness: number;
...
normalScale: number;

In fact if I correct the type the file gives me no errors.
Please can you correct this error?

Three.js version

• [ ] Dev
• [x ] r104
• [ ] ...

Browser

• [x] All of them
• [ ] Chrome
• [ ] Firefox
• [ ] Internet Explorer

OS

• [x] All of them
• [ ] Windows
• [ ] macOS
• [ ] Linux
• [ ] Android
• [ ] iOS

Hardware Requirements (graphics card, VR Device, ...)