import { StructureSchema } from '@ephox/boulder';
import { type Result } from '@ephox/katamari';
export interface HtmlPanelSpec {
    type: 'htmlpanel';
    html: string;
    onInit?: (el: HTMLElement) => void;
    presets?: 'presentation' | 'document';
    stretched?: boolean;
}
export interface HtmlPanel {
    type: 'htmlpanel';
    html: string;
    onInit: (el: HTMLElement) => void;
    presets: 'presentation' | 'document';
    stretched: boolean;
}
export declare const htmlPanelSchema: import("@ephox/boulder").StructureProcessor;
export declare const createHtmlPanel: (spec: HtmlPanelSpec) => Result<HtmlPanel, StructureSchema.SchemaError<any>>;
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