Why is Method can be static displayed when writing ReactJS code in PhpStorm?

Question

phpstorm

I am learning React. I write component code. When writing some function names, PhpStorm highlights and displays the message Method can be static. Although the code works without errors. What is the point of this message?

Answer 1

The bottom line is that this method does not use any properties or methods of the class (that is, it does not need this).
The same thing happens to me when working with Vue. However, however, if you make the method static, everything will break (that's how converting a class to a component works). So I just disable this particular inspection for Vue classes