function isViewModeKey(key) { return this.key === key.value } export const viewModes = [ { key: 'week', name: 'Widok tygodnia', shortcut: 'Tydzień', is: isViewModeKey }, { key: 'month', name: 'Widok miesiąca', shortcut: 'Miesiąc', is: isViewModeKey }, ] export function find(modeKey) { return viewModes.find(mode => mode.key === modeKey) }