import type { Config } from '../../config.js';
import type { EntriesDev, EntriesPrd, HandlerReq, HandlerRes } from '../types.js';
export type ClonableModuleNode = {
    url: string;
    file: string;
};
export type HandlerContext = {
    readonly req: HandlerReq;
    readonly res: HandlerRes;
    /** @deprecated use `data` */
    readonly context: Record<string, unknown>;
    readonly data: Record<string, unknown>;
    unstable_devServer?: {
        rootDir: string;
        resolveClientEntry: (id: string) => string;
        loadServerModuleRsc: (idOrFileURL: string) => Promise<Record<string, any>>;
        loadEntriesDev: (config: {
            srcDir: string;
        }) => Promise<EntriesDev>;
        loadServerModuleMain: (idOrFileURL: string) => Promise<Record<string, any>>;
        transformIndexHtml: (pathname: string) => Promise<TransformStream<any, any>>;
    };
    unstable_modules?: {
        rsdwServer: unknown;
        rdServer: unknown;
        rsdwClient: unknown;
        wakuMinimalClient: unknown;
    };
};
export type Handler = (ctx: HandlerContext, next: () => Promise<void>) => Promise<void>;
export type ErrorCallback = (err: unknown, ctx: HandlerContext, origin: 'handler' | 'rsc' | 'html') => void;
export type MiddlewareOptions = {
    env: Record<string, string>;
    unstable_onError: Set<ErrorCallback>;
} & ({
    cmd: 'dev';
    config: Config;
} | {
    cmd: 'start';
    loadEntries: () => Promise<EntriesPrd>;
});
export type Middleware = (options: MiddlewareOptions) => Handler;