Rule proposition: return-in-computed-property.

[armano2]

Enforces that a return statement is present in computed property (computed-property-return)

This example would throw an error:

export default {
  computed: {
    a () { }
  }
}

What do you think @mysticatea @michalsnik?

[michalsnik]

Released in v3.7.0 🚀 Thanks @armano2 ! Very good job :)