/**
 * Pre-validates a regex pattern before passing it to ripgrep or fd.
 *
 * JavaScript's `RegExp` catches most common syntax errors (unmatched parens,
 * brackets, bad quantifiers) that would otherwise cause rg/fd to exit with
 * code 2 and return empty results — silently confusing the caller.
 *
 * Note: ripgrep uses Rust regex syntax, which is slightly different from
 * JavaScript's (e.g., rg supports `(?P<name>...)` named groups). This
 * pre-check intentionally uses a loose heuristic: it only rejects patterns
 * that are unambiguously broken. Patterns that are valid in Rust regex but
 * invalid in JS regex are NOT rejected here — rg will handle them fine.
 */
export declare function validateRegexPattern(pattern: string): void;
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