import { RequestInit } from "node-fetch";
export interface RuntimeConnection {
    sandboxId: string;
    baseUrl: string;
    token: string;
    directSessionHeader?: boolean;
}
export interface RuntimeSSEEvent {
    event: string;
    data: unknown;
    id?: string;
}
type RuntimeParams = Record<string, string | number | boolean | undefined>;
export declare class RuntimeTransport {
    private readonly resolveConnection;
    private readonly timeout;
    private readonly runtimeProxyOverride?;
    constructor(resolveConnection: (forceRefresh?: boolean) => Promise<RuntimeConnection>, timeout?: number, runtimeProxyOverride?: string | undefined);
    requestJSON<T>(path: string, init?: RequestInit, params?: RuntimeParams): Promise<T>;
    requestBuffer(path: string, init?: RequestInit, params?: RuntimeParams): Promise<Buffer>;
    streamSSE(path: string, params?: RuntimeParams): AsyncGenerator<RuntimeSSEEvent>;
    private fetchWithAuth;
    private fetchForConnection;
    private assertResponse;
    private buildHeaders;
    private buildRequestPath;
}
export {};