import { TransitionState } from './TransitionState';
import { ReturnFocus } from './ReturnFocus';
export declare const SidePanelWidth = 420;
export declare class SidePanelState {
    readonly transition: TransitionState<string>;
    readonly focus: ReturnFocus;
    get isOpen(): boolean;
    get currentPanelId(): string | null | undefined;
    close(): void;
    _open(id: string): void;
    init(): () => void;
}
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