WDIO get root selector

function (fragments, fragmentName, rootSelector, nameSelector) {
        let selector = null;
        const indexes = fragments.length
        for (let i = 1; i <= indexes; i++) {
            rootSelector = rootSelector + `:nth-child(${i})`;
            const name = $(rootSelector).$(nameSelector).getText();
            if (fragmentName === name) {
                selector = rootSelector;
                break;
            }
        }
        return selector;
    }