import { WidgetModel } from '@jupyter-widgets/base';
declare class ExecuteRequest {
    constructor(code: string);
    id: string;
    code: string;
    execute_promise: Promise<any>;
    resolve: Function;
    reject: Function;
}
declare class SafeJSKernel {
    constructor();
    execute(code: string): Promise<any>;
    initialize(): void;
    worker: Worker;
    requests: {
        [key: string]: ExecuteRequest;
    };
}
export declare class RendererModel extends WidgetModel {
    defaults(): {
        _model_name: string;
        _model_module: string;
        _model_module_version: string;
        name: string;
        code: string;
    };
    initialize(attributes: any, options: any): void;
    kernel: SafeJSKernel;
    rendering_function: Function;
}
export {};