> "where as readonly means it's only immutable when used from outside the class but still mutable inside the class" Small correction: The readonly modifier mea

> "where as readonly means it's only immutable when used from outside the class but still mutable inside the class" Small correction: The readonly modifier means you can initialize the variable, but can't mutate it (even within the same class). For example, you can initialize a readonly field inside a constructor, something you can't do with const. Some good docs on it here: https://basarat.gitbooks.io/typescript/content/docs/types/readonly.html https://basarat.gitbooks.io/typescript/content/docs/types/re...