getter-return
Requires all property getter functions to return a value.
Getter functions return the value of a property. If the function returns no
value then this contract is broken.
Invalid:
let foo = {
get bar() {}
};
class Person {
get name() {}
}
Valid:
let foo = {
get bar() {
return true;
}
};
class Person {
get name() {
return "alice";
}
}