ES6 Cookie Library

Cookies.js

export function getCookie(name) {
    if (!name || !hasItem(name)) { return null; }
    return decodeURIComponent(document.cookie.replace(new RegExp(`(?:^|.*;\\s*)${encodeURIComponent(name).replace(/[\-\.\+\*]/g, '\\$&')}\\s*\\=\\s*((?:[^;](?!;))*[^;]?).*`), '$1'));
}

export function setCookie(name, value, options) {
    if (!name || /^(?:expires|max\-age|path|domain|secure)$/.test(name)) { return; }
    const { expires, path, domain, secure } = options;
    let expiresAttr = '';

    if (expires) {
        switch (typeof expires) {
            case 'number':
                expiresAttr = `; max-age=${expires}`;
                break;
            case 'string':
                expiresAttr = `; expires=${expires}`;
                break;
            case 'object':
                if (expires.hasOwnProperty('toGMTString')) { expiresAttr = `; expires=${expires.toGMTString()}`; }
                break;
        }
    }
    document.cookie = `${encodeURIComponent(name)}=${encodeURIComponent(value)}${expiresAttr}${domain ? `; domain=${domain}` : ''}${path ? `; path=${path}` : ''}${secure ? '; secure' : ''}`;
}

export function removeCookie(name) {
    if (!name || !hasItem(name)) { return; }
    const expires = new Date();

    expires.setDate(expires.getDate() - 1);
    document.cookie = `${decodeURIComponent(name)}=; expires=${expires.toGMTString()}; path=/`;
}

export function hasItem(sKey) {
    return (new RegExp(`(?:^|;\\s*)${encodeURIComponent(sKey).replace(/[\-\.\+\*]/g, '\\$&')}\\s*\\=`)).test(document.cookie);
}