export declare const HTML_BLOCK_ELEMENTS: Set<string>;
export declare const HTML_FLOW_CONTAINERS: Set<string>;
export declare const HTML_ELEMENTS: Set<string>;
export declare const HTML_VOID_ELEMENTS: Set<string>;
export declare function safeElementProps(tagName: string, attributes: {
    name: string;
    value: string;
}[]): Record<string, unknown>;
export declare function safeStyle(value: string): Record<string, string> | null;