To define class in es6, you can do this

class A { x = 1; y = 2; z = 3; mx () { // ... } my () { // ... } mz () { // ... } }

When there are more and more A class attribute methods, it is found that the entire file has a large amount of code. Can some properties and methods be divided into a single file (for example, x and mx are divided into one x.js file, y and my are divided into one y.js file...)

If you use extends, you will find a problem. Properties cannot be shared, and neither can methods.

Can we combine (x.js / y.js / ...) into A when defining class A?