/**
 * Check if a file path looks like a test file using substring matching.
 * Used by BM25 scoring to demote test files.
 */
export declare function isTestFile(filePath: string): boolean;
/**
 * Check if a file path looks like a test file using regex patterns.
 * Stricter than isTestFile — used by call graph to exclude test files.
 */
export declare function isTestFileStrict(filePath: string): boolean;
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