import { TemplateEngineEnum } from '../../interfaces/template.types';
import { TemplateEngine } from '../template-engine';
import { EngineOptions } from '../../interfaces/module-config.interface';
export declare class HandlebarsEngine extends TemplateEngine {
    static engineName: TemplateEngineEnum;
    private options;
    constructor(options?: EngineOptions<Handlebars.ParseOptions>);
    render(content: string, data?: Record<string, any>): Promise<string>;
    validate(content: string): Promise<boolean>;
}