import type { Page } from "playwright";
export interface DevOverlayError {
    index: number;
    kind: string;
    code: string | null;
    message: string;
    callStack: string[];
}
export interface DevOverlayResult {
    detected: boolean;
    issuesCount: number;
    errors: DevOverlayError[];
}
/**
 * Detect a Next.js dev overlay on the current page and, if present, capture
 * every queued issue. Idempotent, safe to call multiple times. The function
 * closes the overlay on exit; if it crashes partway, the overlay may be left
 * open (subsequent calls will recover).
 */
export declare function captureDevOverlay(page: Page, opts?: {
    stepDelayMs?: number;
}): Promise<DevOverlayResult>;
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