export declare class ProgressBarComponent {
    /**
     * A value from 0 to 100 indicating progress.
     */
    value: number;
    /**
     * Set to true to indicate an error.
     */
    error: boolean;
    /**
     * An accessible name for the progress bar. If a visible label is present, use `ariaLabelledBy` instead.
     */
    ariaLabel: string;
    /**
     * The ID of any element that labels the progress bar.
     */
    ariaLabelledBy: string;
}