import { MiddlewarePipeline } from "../../middleware/core/pipeline/index.js";
import type { MiddlewareHandler } from "../../middleware/core/types.js";
import type { RuntimeAdapter } from "../../platform/adapters/base.js";
import type { VeryfrontConfig } from "../../config/index.js";
export type MiddlewareFunction = MiddlewareHandler;
interface MiddlewareLoadOptions {
    throwOnError?: boolean;
    /** Explicit host-owned capability for a trusted local or dedicated runtime. */
    allowHostProjectCodeExecution?: boolean;
}
/**
 * Internal control signal used when project middleware exists but the current
 * runtime is not permitted to evaluate it in the host process.
 */
export declare class ProjectMiddlewareHostExecutionDeniedError extends TypeError {
    constructor();
}
export declare function loadMiddlewareFile(projectDir: string, adapter: RuntimeAdapter, options?: MiddlewareLoadOptions): Promise<MiddlewareFunction[]>;
export declare function setupMiddleware(pipeline: MiddlewarePipeline, config: VeryfrontConfig, requestHandler: (req: Request) => Promise<Response>): Promise<void>;
export {};
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