import { ServerConnection } from '../serverconnection';
import { PartialJSONObject } from '@lumino/coreutils';
/**
 * Fetch all of the kernel specs.
 *
 * @param settings - The optional server settings.
 * @param useCache - Whether to use the cache. If false, always request.
 *
 * @returns A promise that resolves with the kernel specs.
 *
 * #### Notes
 * Uses the [Jupyter Notebook API](http://petstore.swagger.io/?url=https://raw.githubusercontent.com/jupyter/notebook/master/notebook/services/api/api.yaml#!/kernelspecs).
 */
export declare function getSpecs(settings?: ServerConnection.ISettings): Promise<ISpecModels>;
/**
 * Kernel Spec interface.
 *
 * #### Notes
 * See [Kernel specs](https://jupyter-client.readthedocs.io/en/latest/kernels.html#kernelspecs).
 */
export interface ISpecModel extends PartialJSONObject {
    /**
     * The name of the kernel spec.
     */
    readonly name: string;
    /**
     * The name of the language of the kernel.
     */
    readonly language: string;
    /**
     * A list of command line arguments used to start the kernel.
     */
    readonly argv: string[];
    /**
     * The kernel’s name as it should be displayed in the UI.
     */
    readonly display_name: string;
    /**
     * A dictionary of environment variables to set for the kernel.
     */
    readonly env?: PartialJSONObject;
    /**
     * A mapping of resource file name to download path.
     */
    readonly resources: {
        [key: string]: string;
    };
    /**
     * A dictionary of additional attributes about this kernel; used by clients to aid in kernel selection.
     */
    readonly metadata?: PartialJSONObject;
}
/**
 * The available kernelSpec models.
 *
 * #### Notes
 * See the [Jupyter Notebook API](http://petstore.swagger.io/?url=https://raw.githubusercontent.com/jupyter/notebook/master/notebook/services/api/api.yaml#!/kernelspecs).
 */
export interface ISpecModels extends PartialJSONObject {
    /**
     * The name of the default kernel spec.
     */
    default: string;
    /**
     * A mapping of kernel spec name to spec.
     */
    readonly kernelspecs: {
        [key: string]: ISpecModel | undefined;
    };
}