import { TestResult } from '@playwright/test/reporter';
/**
 * Playwright >= 1.51 attaches the error-context.md it writes for a failed test under this name,
 * with contentType `text/markdown`.
 */
export declare const ERROR_CONTEXT_ATTACHMENT_NAME = "error-context";
/**
 * Matches the server-side cap on `execution.error_context`. Truncating here keeps oversized page
 * snapshots from being rejected (or bloating the bulk request) while still sending what fits.
 */
export declare const ERROR_CONTEXT_MAX_LENGTH = 262144;
/**
 * Trims `content` to at most `limit` characters, leaving room for a marker so the reader can tell
 * the text is incomplete. The result is never longer than `limit`. Pure — no I/O.
 */
export declare function truncateErrorContext(content: string, limit?: number): string;
/**
 * Reads the error-context attachment for a finished test, if Playwright produced one.
 *
 * Returns null rather than throwing: a missing or unreadable file must never fail the result
 * submission. The attachment is left in place so it is still uploaded as a file as well.
 */
export declare function readErrorContext(attachments: TestResult['attachments'], limit?: number): Promise<string | null>;