time-helper-js/dist/relative.js

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

export const timeAgo = (date) => {
    if (typeof date !== 'string')
        throw new Error('provided date must be a string!');
    const currentDate = new Date();
    const targetDate = new Date(new Date(date).toISOString());
    const diffMs = currentDate.getTime() - targetDate.getTime();
    if (diffMs < 0)
        return 'in the future';
    const seconds = Math.floor(diffMs / 1000);
    const minutes = Math.floor(seconds / 60);
    const hours = Math.floor(minutes / 60);
    const days = Math.floor(hours / 24);
    const weeks = Math.floor(days / 7);
    const months = Math.floor(days / 30);
    const years = Math.floor(days / 365);
    if (years > 0)
        return `${years} year${years > 1 ? 's' : ''} ago`;
    if (months > 0)
        return `${months} month${months > 1 ? 's' : ''} ago`;
    if (weeks > 0)
        return `${weeks} week${weeks > 1 ? 's' : ''} ago`;
    if (days > 0)
        return `${days} day${days > 1 ? 's' : ''} ago`;
    if (hours > 0)
        return `${hours} hour${hours > 1 ? 's' : ''} ago`;
    if (minutes > 0)
        return `${minutes} minute${minutes > 1 ? 's' : ''} ago`;
    return 'just now';
};
export const timeFromNow = (date) => {
    if (typeof date !== 'string')
        throw new Error('provided date must be a string!');
    const currentDate = new Date();
    const targetDate = new Date(new Date(date).toISOString());
    const diffMs = targetDate.getTime() - currentDate.getTime();
    if (diffMs < 0)
        return 'in the past';
    const seconds = Math.floor(diffMs / 1000);
    const minutes = Math.floor(seconds / 60);
    const hours = Math.floor(minutes / 60);
    const days = Math.floor(hours / 24);
    const weeks = Math.floor(days / 7);
    const months = Math.floor(days / 30);
    const years = Math.floor(days / 365);
    if (years > 0)
        return `in ${years} year${years > 1 ? 's' : ''}`;
    if (months > 0)
        return `in ${months} month${months > 1 ? 's' : ''}`;
    if (weeks > 0)
        return `in ${weeks} week${weeks > 1 ? 's' : ''}`;
    if (days > 0)
        return `in ${days} day${days > 1 ? 's' : ''}`;
    if (hours > 0)
        return `in ${hours} hour${hours > 1 ? 's' : ''}`;
    if (minutes > 0)
        return `in ${minutes} minute${minutes > 1 ? 's' : ''}`;
    return 'just now';
};
export const timeDiff = (d1, d2, diff) => {
    const isoDate1 = new Date(new Date(d1).toISOString());
    const isoDate2 = new Date(new Date(d2).toISOString());
    if (!(isoDate1 instanceof Date) || !(isoDate2 instanceof Date))
        throw new Error('provided date must be a string!');
    const msDiff = Math.abs(isoDate2.getTime() - isoDate1.getTime()); // absolute difference in ms
    const seconds = msDiff / 1000;
    const minutes = seconds / 60;
    const hours = minutes / 60;
    const days = hours / 24;
    const weeks = days / 7;
    const months = days / 30.44; // average month length
    const years = days / 365.25; // include leap years
    switch (diff) {
        case 'seconds': return seconds.toFixed(0);
        case 'minutes': return minutes.toFixed(0);
        case 'hours': return hours.toFixed(0);
        case 'days': return days.toFixed(0);
        case 'weeks': return weeks.toFixed(1);
        case 'months': return months.toFixed(1);
        case 'years': return years.toFixed(2);
        default: return '0';
    }
};
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