Type Alias MonthMap

type MonthMap = { readonly JAN: 1; readonly FEB: 2; readonly MAR: 3; readonly APR: 4; readonly MAY: 5; readonly JUN: 6; readonly JUL: 7; readonly AUG: 8; readonly SEP: 9; readonly OCT: 10; readonly NOV: 11; readonly DEC: 12; }