/**
 * Balanced-Bracket JSON Scanning
 *
 * LLM responses often embed JSON with nested objects/arrays. Regex-based extraction
 * that stops at the first closing bracket it meets truncates on any inner nesting
 * (e.g. `{"a": {"b": 1}, "c": 2}` truncates to `{"a": {"b": 1}` — unbalanced). These
 * helpers instead walk the string tracking bracket depth and skip over string-literal
 * contents (including escaped quotes), so braces/brackets inside free-text field
 * values don't miscount depth.
 */
/**
 * Finds the index of the bracket matching the one at `openIndex` (must be `{` or `[`
 * in `content`), skipping over string-literal contents. Returns null if `openIndex`
 * isn't an opening bracket or no match is found before the end of the string.
 */
export declare function findMatchingBracketEnd(content: string, openIndex: number): null | number;
/**
 * Walks backward from `fromIndex` to find the `{` that encloses it, balancing any
 * `}`/`{` pairs met along the way. Returns null if no enclosing brace is found.
 */
export declare function findEnclosingBraceStart(content: string, fromIndex: number): null | number;
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