export const PUSH_KEY = 'PUSH_KEY' ; export const POP_TO_FRONT_KEY = 'POP_TO_FRONT_KEY' ; export const POP_KEY = 'POP_KEY' ; export const MOVE_TO_FRONT_KEY = 'MOVE_TO_KEY' ; export const REMOVE_KEY = 'REMOVE_KEY' ; export const CHANGE_SCREEN_KEY = 'CHANGE_SCREEN_KEY' ;