api/cookie: update cookies value-by-value in manager

api/src/processing/cookie/cookie.js

@@ -4,13 +4,18 @@ export default class Cookie {
     constructor(input) {
         assert(typeof input === 'object');
         this._values = {};
-        this.set(input)
+
+        for (const [ k, v ] of Object.entries(input))
+            this.set(k, v);
     }
 
-    set(values) {
-        Object.entries(values).forEach(
-            ([ key, value ]) => this._values[key] = value
-        )
+    set(key, value) {
+        const old = this._values[key];
+        if (old === value)
+            return false;
+
+        this._values[key] = value;
+        return true;
     }
 
     unset(keys) {

api/src/processing/cookie/manager.js

@@ -42,8 +42,17 @@ export function getCookie(service) {
 }
 
 export function updateCookieValues(cookie, values) {
-    cookie.set(values);
-    if (Object.keys(values).length) dirty = true
+    let changed = false;
+
+    for (const [ key, value ] of Object.entries(values)) {
+        changed ||= cookie.set(key, value);
+    }
+
+    if (changed) {
+        dirty = true;
+    }
+
+    return changed;
 }
 
 export function updateCookie(cookie, headers) {