tree ec11a758eef4e4f8e66da5c3e1c846e5440567c8
parent 13639f8ed2915fda693f2b3a0a5dadf135b76887
author Gerrit Code Review <no-reply@gerritcodereview.com> 1632817830 +0200
committer Ben Rohlfs <brohlfs@google.com> 1632824356 +0000

Add the override keyword to class members in TypeScript files

TypeScript?s override keyword (added in 4.3) works similarly to
@Override in Java. It makes the intention clear and ensures there is
actually a member in the base class with the same name. This helps with
things like:
- Typos in the overriding member name
- Remember to rename members in sub classes when renaming an overridden
member in a base class

class Parent {
  foo() {}
}

class Child extends Parent {
  override bar() {}
  //       ~~~ This member cannot have an 'override' modifier because it
               is not declared in the base class 'Parent'.
}

This change will not cause a runtime change: the override keyword is not
present in the resulting JavaScript.

PiperOrigin-RevId: 399381413
Google-Bug-Id: b/201385514
Change-Id: If86682c7fcf0b6b12cfe65a7b0189acb353e7aea