@plteam/chat-ui/dist/utils/numberUtils/dateToNumber.js

CUI Kit is a free and open-source library for creating AI assistant chat interfaces, built with React, Material UI, and TypeScript

export const dateToNumber = (date, unitOfTime = 'days') => {
    const day = date?.startOf('day');
    if (!day)
        return 0;
    let num = 1;
    switch (unitOfTime) {
        case 'days': num = 86400;
    }
    return Math.floor(day.unix() / num);
};