import { GlobalContext, ScopedContext } from './context-util';
import { RequestHandler } from 'express';
export declare enum Hooks {
    BEFORE_REQUEST = "beforeRequestHooks",
    AFTER_SEND = "afterSend",
    CREATED = "created"
}
export interface TransformerFunc {
    (body: any): void;
}
export interface HookParamFunc {
    (globalCtx: GlobalContext, scopedCtx?: ScopedContext): void;
}
export interface PluginAPiFunc {
    (api: PluginApi): void;
}
export declare class PluginApi {
    private ctx;
    middleware: Array<RequestHandler>;
    transformer: Array<TransformerFunc>;
    private [Hooks.BEFORE_REQUEST];
    private [Hooks.AFTER_SEND];
    private [Hooks.CREATED];
    constructor(ctx: GlobalContext);
    registerMiddleware(creator: (ctx: GlobalContext) => RequestHandler): void;
    transformResponse(transformer: TransformerFunc): void;
    applyTransformer(res: any): any;
    emit(hook: Hooks, scopedContext?: ScopedContext): void;
    on(hook: Hooks, handler: HookParamFunc): void;
    initPluginApi(ctx: GlobalContext): void;
}