import type { Target, CdpMessage } from "./target";
/** Per-session state shared across multiple domains. Each field is a
 *  mutable holder so domains can read/write the same value through the
 *  closure-captured object. State used by exactly one domain stays inside
 *  that domain's installer instead of going here. */
export type DomainCtx = {
    lastScriptEval: {
        value: string;
    };
    pageExecCtx: {
        id: number;
        isPage: boolean;
    };
    lastConsoleApiCalled: {
        value: any | null;
    };
};
export declare function makeDomainCtx(): DomainCtx;
/** Reply to a tools-side request with `result` and swallow the message so
 *  it's never forwarded to Safari. Used by ack-and-stub filters. */
export declare function swallowWith(t: Target, msg: CdpMessage, result: any): Promise<CdpMessage | null>;