import { IFeature, ILSPDocumentConnectionManager, EditorAdapter } from '@jupyterlab/lsp';
import { ISettingRegistry } from '@jupyterlab/settingregistry';
import { Signal } from '@lumino/signaling';
import * as lsProtocol from 'vscode-languageserver-protocol';
export interface IFeatureSettings<T> {
    readonly composite: Required<T>;
    readonly changed: Signal<IFeatureSettings<T>, void>;
    readonly ready?: Promise<void>;
    set(setting: keyof T, value: any): void;
}
export declare namespace Feature {
    interface IOptions {
        connectionManager: ILSPDocumentConnectionManager;
    }
}
export declare abstract class Feature implements IFeature {
    /**
     * The feature identifier. It must be the same as the feature plugin id.
     */
    abstract readonly id: string;
    /**
     * LSP capabilities implemented by the feature.
     */
    abstract readonly capabilities?: lsProtocol.ClientCapabilities;
    /**
     * Editor extension factory linked to the LSP feature.
     */
    extensionFactory?: EditorAdapter.ILSPEditorExtensionFactory;
    protected connectionManager: ILSPDocumentConnectionManager;
    constructor(options: Feature.IOptions);
}
export declare class FeatureSettings<T> implements IFeatureSettings<T> {
    protected settingRegistry: ISettingRegistry;
    protected settings: ISettingRegistry.ISettings;
    changed: Signal<FeatureSettings<T>, void>;
    private _ready;
    constructor(settingRegistry: ISettingRegistry, featureID: string);
    get ready(): Promise<void>;
    get composite(): Required<T>;
    set(setting: keyof T, value: any): void;
}