/**
 * Shared .gitignore reading utility.
 *
 * Walks up the directory tree collecting .gitignore patterns.
 * Used by both Glob and Grep tools to respect .gitignore rules.
 */
/**
 * Default ignore patterns used when no .gitignore is present,
 * or merged with .gitignore patterns.
 */
export declare const DEFAULT_IGNORE_PATTERNS: string[];
/**
 * Read and parse .gitignore files by walking up from `dir` to the filesystem root.
 * Returns an array of gitignore patterns (comments and empty lines stripped).
 */
export declare function readGitignorePatterns(dir: string): Promise<string[]>;
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