Rename doesn't work for string literal compared to string literal type

[DanielRosenwasser]

In the below, try to rename "ADD_TODO" in the case clause. It fails.

interface AddTodo {
    type: "ADD_TODO";
    text: string;
}

interface DeleteTodo {
    type: "DELETE_TODO";
    position: number
    newText: string;
} 

type TodoAction = AddTodo | DeleteTodo;

function dispatchOrSomething(action: TodoAction) {
    switch (action.type) {
        case "ADD_TODO":
            break;
        case "DELETE_TODO":

    }
}