timeAgo, pluralize, escapeHtml

Utils.js

export function timeAgo(time, label = 'ago') {
    const between = Date.now() / 1000 - Number(time);
    let lb = ' ' + label;
    let secPerMinute = 60;
    let secPerHour = secPerMinute * 60;
    let secPerDay = secPerHour * 24;
    let secPerMonth = secPerDay * 30;
    let secPerYear = secPerDay * 365;

    if (between < secPerHour) {
        if (~~(between / secPerMinute) === 0)
            return 'now';
        return pluralize(~~(between / secPerMinute), ' min') + lb;
    } else if (between < secPerDay) {
        return pluralize(~~(between / secPerHour), ' hour') + lb;
    } else if (between < secPerMonth) {
        return pluralize(~~(between / secPerDay), ' day') + lb;
    } else if (between < secPerYear) {
        return pluralize(~~(between / secPerMonth), ' month') + lb;
    } else {
        return pluralize(~~(between / secPerYear), ' year') + lb;
    }
}

function pluralize(time, label) {
    if (time === 1) {
        return time + label
    }
    return time + label + 's'
}

export function escapeHtml(text) {
    if (!text) return "";
    return text
        .replace(/&/g, "&amp;")
        .replace(/</g, "&lt;")
        .replace(/>/g, "&gt;")
        .replace(/"/g, "&quot;")
        .replace(/'/g, "&#039;");
}