How to use the cross-domain-utils/src.getUserAgent function in cross-domain-utils

export function needsBridgeForBrowser() : boolean {

    if (getUserAgent(window).match(/MSIE|trident|edge\/12|edge\/13/i)) {
        return true;
    }

    return false;
}

export function needsGlobalMessagingForBrowser() {

    if (getUserAgent(window).match(/MSIE|trident|edge\/12|edge\/13/i)) {
        return true;
    }

    if (!CONFIG.ALLOW_POSTMESSAGE_POPUP) {
        return true;
    }

    return false;
}

export function needsGlobalMessagingForBrowser() : boolean {

    if (getUserAgent(window).match(/MSIE|rv:11|trident|edge\/12|edge\/13/i)) {
        return true;
    }

    return false;
}