/**
 * Parallel Test Execution — v4.9.0
 *
 * Smart parallel runner with adapter grouping, rate limiting, and live progress.
 */
import type { TestCase, TestResult, SuiteResult } from './types';
export interface ParallelConfig {
    concurrency: number;
    respectRateLimits?: boolean;
    groupByAdapter?: boolean;
    progressCallback?: (state: ParallelProgress) => void;
}
export interface ParallelProgress {
    total: number;
    completed: number;
    running: number;
    queued: number;
    passed: number;
    failed: number;
    eta_ms: number;
    elapsed_ms: number;
}
export interface TestExecutor {
    (test: TestCase): Promise<TestResult>;
}
export declare class ParallelRunner {
    private concurrency;
    private _respectRateLimits;
    private groupByAdapter;
    private progressCallback?;
    constructor(concurrency?: number, config?: Partial<ParallelConfig>);
    run(tests: TestCase[], executor: TestExecutor): Promise<SuiteResult>;
    private _groupByAdapter;
    private _reportProgress;
}
/**
 * Render a text progress bar.
 */
export declare function renderParallelProgress(state: ParallelProgress): string;
/**
 * Estimate optimal concurrency based on test count and adapter count.
 */
export declare function estimateConcurrency(testCount: number, adapterCount?: number): number;
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