Pull Up Method

Goal

Methods that subclasses implement identically move to the shared superclass.

Before the refactoring

class Manager  extends Employee { name() { return this._name; } }
class Engineer extends Employee { name() { return this._name; } }

After the refactoring

class Employee { name() { return this._name; } }
class Manager  extends Employee {}
class Engineer extends Employee {}

Savings

One implementation, one place to fix; subclasses focus on what's actually different.

Note

If the methods only superficially resemble each other, pulling up creates a fake-shared abstraction — unify only when behavior is actually identical.