import { ProposalChooserLayoutResetter, Tree } from '../../../index';
/**
 * This class is used to reset and restore styles in the DOM, so we can measure the preferred size of the tree.
 */
export declare class TreeLayoutResetter implements ProposalChooserLayoutResetter {
    cssSelector: string;
    protected _tree: Tree;
    constructor(tree: Tree);
    modifyDom(): void;
    restoreDom(): void;
    protected _ensureFirstLast(): void;
}
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