Regex Pattern needs an overhaul to make use of the full potential of custom parsers

[tahaf22labs]

While using casual parser, if I take the documentation example, say

custom.parsers.push({
    pattern: () => { return /\bChristmas\b/i },
    extract: (context, match) => {
        return {
            day: 25, month: 12
        }
    }
});

custom.parseDate("I'll arrive at 2.30AM on Christmas night");

This works great until I want something like
I'll arrive Christmas of next year. Or Next Christmas year.
In both of the results, it wont be able to get accurate year based on my inputs, since it occurs post the pattern.
My requirement is to add Fiscal format but it needs to inherit the year based on refDate which we might get from extract's context.
In current situation, whatever I search, the refDate will return me the current Date.