export const flag = /[gimsuy]/ ; export const cX = /^([A-Za-z])/ ; export const xhh = /^([0-9A-Fa-f]{2})/ ; export const uhhhh = /^([0-9A-Fa-f]{4})/ ; export const digit = /^(\d+)/ ; export const comma = /^,/ ; export const lookAround = /^(\?=|\?!|\?<=|\?<!)/ ; export const nonCapturing = /^\?:/ ; export const namedCapturing = /^\?<(\w+)>/ ; export const namedBackRef = /^<(\w+)>/ ;