@loopback/core/dist/server.d.ts

import { LifeCycleObserver } from './lifecycle';
/**
 * Defines the requirements to implement a Server for LoopBack applications:
 * start() : Promise<void>
 * stop() : Promise<void>
 * It is recommended that each Server implementation creates its own child
 * Context, which inherits from the parent Application context. This way,
 * any Server-specific bindings will remain local to the Server instance,
 * and will avoid polluting its parent module scope.
 */
export interface Server extends LifeCycleObserver {
    /**
     * Tells whether the server is listening for connections or not
     */
    readonly listening: boolean;
}