import { type BrowserKey } from './browser/launch';
/** Mimics the real published layout: /instant-worlds/<worldId>/<buildId>/ */
export declare const DEFAULT_MOUNT_PREFIX = "instant-worlds/verify-world/verify-build";
export type SubPathFinding = {
    kind: 'page-error' | 'not-found' | 'blank-render' | 'console-error';
    detail: string;
};
export type VerifySubPathResult = {
    mountUrl: string;
    findings: SubPathFinding[];
    /** Fraction of sampled pixels differing from the modal background colour (0..1). */
    nonBlankFraction: number;
    requests: {
        url: string;
        status: number;
    }[];
};
export type VerifySubPathOptions = {
    directory: string;
    mountPrefix?: string;
    /** How long to let the world boot before sampling (ms). */
    settleMs?: number;
    timeoutMs?: number;
    width?: number;
    height?: number;
    /** Minimum fraction of non-background pixels for the render to count as non-blank. */
    minNonBlankFraction?: number;
    browser?: BrowserKey;
    onProgress?: (message: string) => void;
};
export declare function verifySubPath(options: VerifySubPathOptions): Promise<VerifySubPathResult>;
export declare function formatSubPathResult(result: VerifySubPathResult): string;