JavaScript human readable date

gistfile1.txt

export const timeSince = (timestamp) => {
    const seconds = Math.floor((new Date() - new Date(timestamp)) / 1000);

    let interval = Math.floor(seconds / 31536000);

    if (interval > 1) {
        return interval + " years";
    }

    interval = Math.floor(seconds / 2592000);
    if (interval > 1) {
        return interval + " months";
    }

    interval = Math.floor(seconds / 86400);
    if (interval > 1) {
        return interval + " days";
    }

    interval = Math.floor(seconds / 3600);
    if (interval > 1) {
        return interval + " hours";
    }

    interval = Math.floor(seconds / 60);
    if (interval > 1) {
        return interval + " minutes";
    }

    return Math.floor(seconds) + " seconds";
};