multiple libraries, add request and cookie

lib/utility/cookie.js

@@ -0,0 +1,34 @@
+function setCookie(name, value, expireDays) {
+    let extra = `; domain=${location.host}; path=/`;
+    if (expireDays != null) {
+        const d = new Date();
+        d.setTime(d.getTime() + (expireDays * 24 * 60 * 60 * 1000));
+        extra += `; expires=${d.toGMTString()}`;
+    }
+    if (/^(https|wss):$/.test(location.protocol)) {
+        extra += '; secure';
+    }
+    document.cookie = `${name}=${encodeURIComponent(value)}${extra}`;
+}
+
+function getCookie(name) {
+    name += '=';
+    const cookies = document.cookie.split(';');
+    for (let cookie of cookies) {
+        cookie = cookie.trim();
+        if (cookie.indexOf(name) === 0) {
+            return decodeURIComponent(cookie.substring(name.length));
+        }
+    }
+    return null;
+}
+
+function deleteCookie(name) {
+    setCookie(name, '', -1);
+}
+
+export {
+    getCookie,
+    setCookie,
+    deleteCookie
+}