bool hidePlans = const bool.fromEnvironment('HIDE_PLANS', defaultValue: false); const buildDate = String.fromEnvironment('BUILD_DATE', defaultValue: ''); const List durationValues = [7, 14, 21]; const List dietTypeValues = ['veg', 'light', 'carb', 'meat']; const List planTypeValues = ['fit', 'slim', 'wellness', 'behavior']; const newMessagesChannelName = 'private-new-chat-messages'; const newNotificationsChannelName = 'private-message-events'; const directChatChannelName = 'private-direct-chat'; const presenceDirectChatChannelName = 'presence-direct-chat'; const thresholdForPagination = 150;