/**
 * Strips OS-specific absolute file paths from text so that the same error
 * produces the same fingerprint regardless of where it was captured.
 *
 * Targets:
 *   - Windows: C:\Users\foo\project\file.js  → <PATH>/file.js
 *   - Linux:   /home/foo/project/file.js     → <PATH>/file.js
 *   - Node internal: node:internal/...       → left as-is (already portable)
 */
export declare function stripAbsolutePaths(text: string): string;
/**
 * Generates a SHA-256 fingerprint from stderr/stdout output.
 * This provides the exact match hash for deterministic failures.
 *
 * Normalizes:
 *   - Line endings (\r\n → \n)
 *   - Absolute file paths (stripped to basename)
 *   - Trailing whitespace
 */
export declare function generateExactFingerprint(stderr: string): string;
/**
 * Extracts common error patterns from stderr (e.g., Exception names)
 * This provides the fuzzy fallback for non-deterministic failures (like memory addresses).
 *
 * Whitelist approach: only extract patterns matching known error shapes.
 * Unknown patterns that happen to look like error codes are ignored.
 */
export declare function extractErrorPatterns(stderr: string): string[];
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