Method maybeNotify

src/core/runtime/runtime.js:489–496

* Check if a method call is known to mutate its receiver, and notify if so. * @param {Object} target - The object the method was called on * @param {string} methodName - The method name

(target, methodName)

         * @param {string} methodName - The method name
         */
        maybeNotify(target, methodName) {
            if (target == null || typeof target !== "object") return;
            var typeName = target.constructor && target.constructor.name;
            var methods = typeName && config.mutatingMethods[typeName];
            if (methods && methods.includes(methodName)) {
                this.notifyMutation(target);
            }
        }

        #trackMutation(val) {
            if (this.reactivity.isTracking && val != null && typeof val === "object") {