export declare class LbCookieStore {
    private value;
    /** Current `cks_ga=…` header value, or null when unset. */
    headerValue(): string | null;
    /** Parse `Set-Cookie` response headers and retain `cks_ga` when present. */
    ingestSetCookie(headers: Headers): void;
    /** @internal test helper */
    getValue(): string | null;
    /**
     * Obtain `cks_ga` from the game-api before opening a WebSocket so the
     * upgrade lands on the same upstream as subsequent HTTP mutations.
     *
     * Failures (timeout / abort / network) throw {@link CrowdyTimeoutError} or
     * {@link CrowdyNetworkError} — never a raw `AbortError`/`DOMException`.
     * Callers that treat sticky cookies as best-effort should catch and continue.
     */
    primeFromGraphql(args: {
        endpoint: string;
        token?: string | null;
        timeoutMs?: number;
        signal?: AbortSignal;
    }): Promise<void>;
}
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