declare const CLASS_PREFIX = "md-screen-reader-announcer";
declare const LEVELS: {
    ASSERTIVE: string;
    POLITE: string;
};
declare const DEFAULTS: {
    IDENTITY: string;
    DELAY: number;
    LEVEL: string;
    TIMEOUT: number;
};
declare const STYLE: {
    wrapper: string;
};
export { CLASS_PREFIX, DEFAULTS, STYLE, LEVELS };