time-helper-js/dist/date.utiils.js

A lightweight JavaScript library for handling time, date, and formatting operations easily

export const isLeapYear = (year) => {
    if (typeof year === 'number') {
        return (year % 4 === 0 && year % 100 !== 0) || year % 400 === 0;
    }
    const isoDate = new Date(new Date(year).toISOString());
    const getyear = isoDate.getFullYear();
    return (getyear % 4 === 0 && getyear % 100 !== 0) || getyear % 400 === 0;
};
export const daysInMonth = (year, month) => {
    if (typeof year !== 'number' || typeof month !== 'number')
        throw new Error('year and month must be a number');
    const date = new Date(year, month, 0);
    if (date.getDate() !== 0)
        return date.getDate();
};
export const isToday = (date) => {
    const d = new Date(new Date(date).toISOString());
    if (!(d instanceof Date))
        throw new Error('provided date must be a Date');
    const now = new Date();
    return (d.getDate() === now.getDate() &&
        d.getMonth() === now.getMonth() &&
        d.getFullYear() === now.getFullYear());
};
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