export declare class ProgressBar { el: HTMLIfxProgressBarElement; /** Current value of the progress bar (e.g. completion percentage). */ readonly value: number; /** Size of the progress bar (e.g. small, medium, large). */ readonly size: string; /** Whether to show a text label next to the progress bar. */ readonly showLabel: boolean; internalValue: number; valueChanged(newValue: number, oldValue: number): void; componentWillLoad(): void; componentDidLoad(): Promise; render(): any; }