import type { ClassFieldDecorator5, Nilable, ObjectKey } from "../types/internal.js";
/**
 * Imports a value into a property and sets up a getter for this.
 *
 * @example
 * ```
 * import createServer, { IHttp1Request, IHttp1Response } from '@egomobile/http-server'
 * import { Controller, ControllerBase, GET, Import } from '@egomobile/http-controllers'
 *
 * // setup controller and define the
 * // value keys to import
 *
 * @Controller()
 * export default class MyController extends ControllerBase {
 *   @Import()  // s. [1]
 *   public foo!: string
 *
 *   @Import('currentTime')  // s. [2]
 *   public now!: Date
 *
 *   @GET()
 *   async index(request: IHttp1Request, response: IHttp1Response) {
 *     response.write(this.foo + ': ' + this.now)
 *   }
 * }
 *
 * // setup server with import values ...
 *
 * const app = createServer()
 *
 * // setup controller
 * // with import values
 * app.controllers(__dirname, {
 *   // [1] no function => static value for MyController.foo property
 *   foo: 'bar',
 *
 *   // [2] function => dynamic value for MyController.now property
 *   currentTime: () => new Date(),
 * })
 *
 * app.listen()
 * ```
 *
 * @param {Nilable<ObjectKey>} [key] The key. Default: The name of the underlying property.
 *
 * @returns {ClassFieldDecorator5} The new decorator function.
 */
export declare function Import(key?: Nilable<ObjectKey>): ClassFieldDecorator5;