export declare const StyledRoot: import("styletron-react").StyletronComponent<"div", {
    $isButton: boolean;
} & {
    $backgroundColor: string;
    $color: string;
    $nested: boolean;
}>;
export declare const StyledLeadingContent: import("styletron-react").StyletronComponent<"div", {
    $includesArtwork: boolean;
}>;
export declare const StyledTrailingIconButton: import("styletron-react").StyletronComponent<"button", {
    $nested: boolean;
}>;
export declare const StyledMessageContent: import("styletron-react").StyletronComponent<"div", {
    $actionPosition: import("../banner").ActionPosition;
}>;