declare global {
    interface Window {
        /**
         * Injected configuration and metadata payload from the Node.js test runner.
         */
        __lupa__: {
            /**
             * Test suites to be initialized and executed in the browser.
             */
            suites: {
                /** Name of the suite */
                name: string;
                /** Default timeout override for tests in this suite (in milliseconds) */
                timeout?: number;
                /** Default retries override for tests in this suite */
                retries?: number;
                /** Array of test file paths to resolve and execute */
                files: string[];
            }[];
            /**
             * Global runner configuration settings.
             */
            config: {
                /** Global test timeout limit in milliseconds */
                timeout?: number;
                /** Global test retries limit */
                retries?: number;
                /** Query filters used by the Refiner to include/exclude specific tests */
                filters?: any;
                /** If true, the runner lists suite and test files instead of executing them */
                list?: boolean;
            };
            /** Configured test plugins to import and register */
            testPlugins?: (string | [string, any])[];
            /** Unique ID for the current execution batch/chunk */
            chunkId?: string;
            /** Name of the active browser executing this test (e.g., 'chromium', 'firefox', 'webkit') */
            browserName?: string;
        };
        /**
         * Callback/RPC method triggered by the harness when all tests have finished execution,
         * signaling completion back to the Node.js runner process.
         */
        __lupa_runner_end__: () => Promise<void>;
        /**
         * Boolean flag indicating whether the runner is executing under test/CI mode.
         */
        __lupa_testing_mode__?: boolean;
    }
    var litIssuedWarnings: Set<string> | undefined;
}
export declare function boot(): Promise<void>;