Антон Шаманов

Object.prototype.hasOwnNestedProperty = function(propertyPath){
    if (!propertyPath) {
        return false;
    }
    let properties = propertyPath.split('.');
    let self = this;
    for (let i = 0; i < properties.length; i++) {
        var prop = properties[i];
        if (!self || !self.hasOwnProperty(prop)) {
            return false;
        } else {
            self = self[prop];
        }
    }
    return true;
};

let response = {data: {users: {}}}
response.hasOwnNestedProperty('data.users');