import '@material/web/icon/icon.js';
import '@operato/data-grist';
import { LitElement } from 'lit';
export declare class DataKeySetImporter extends LitElement {
    static styles: import("lit").CSSResult[];
    dataKeySets: any[];
    private columns;
    render(): import("lit-html").TemplateResult<1>;
    save(): Promise<void>;
}