declare function isChatGptUrl(url: string): boolean;
declare function isBunRuntime(): boolean;
declare function shouldUseNodeHelper(): boolean;
declare function resolveNodeBinary(): string;
declare function helperScriptPath(): string;
/** Terminate the persistent helper daemon (call on plugin teardown). */
export declare function shutdownHelper(): void;
/** Drop-in fetch for ChatGPT backend (Node helper daemon under Bun, else global fetch). */
export declare function chatgptFetch(url: string, init?: RequestInit & {
    stream?: boolean;
}): Promise<Response>;
/** Testing exports */
export declare const httpTesting: {
    isChatGptUrl: typeof isChatGptUrl;
    isBunRuntime: typeof isBunRuntime;
    shouldUseNodeHelper: typeof shouldUseNodeHelper;
    helperScriptPath: typeof helperScriptPath;
    resolveNodeBinary: typeof resolveNodeBinary;
    shutdownHelper: typeof shutdownHelper;
    helperPid: () => number | undefined;
    crashHelper: () => void;
};
export {};
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