export declare const NEXUS_CONTEXT_TOKEN_HEADER_KEY = "x-nexus-context-token";
export declare const GLOBAL_KEY_NEXUS_RUNTIME = "__nexus_runtime__";
export declare const NEXUS_FETCH_CONTENT_HEADER_KEY = "x-nexus-fetch-content";
export declare const NEXUS_RESPONSE_FETCH_CONTENT_HEADER_KEY = "x-nexus-response-fetch-content";
/** 与 runtime GatewayInvocationOptions 对应：headers 追加/覆盖请求头，parse 自定义 payload 序列化 */
export interface NexusGatewayInvocationOptions {
    headers?: Record<string, string>;
    parse?: (body: unknown) => unknown;
}
export declare const invoke: (gateway: string, endpoint: string, payload: unknown, options?: NexusGatewayInvocationOptions) => Promise<Response>;
export declare const fetch: (url: string, init?: RequestInit) => Promise<Response>;
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