/**
 * JSON repair — ported from Pi's `utils/json-parse.ts` (v0.80.3).
 *
 * LLMs sometimes produce JSON with raw control characters inside string
 * literals (e.g. a literal newline in a tool-call argument) or invalid escape
 * sequences (e.g. `\x` or `\d`). Standard `JSON.parse` rejects these, causing
 * tool-call parsing to fail. `repairJson` normalizes the string before parse:
 *
 * - Escapes raw control characters (U+0000–U+001F) inside string literals.
 * - Doubles backslashes before invalid escape characters (so `\d` → `\\d`).
 *
 * Zero dependencies. The `parseStreamingJson` function from Pi (which uses the
 * `partial-json` library for incomplete-JSON parsing) is NOT ported — moss has
 * its own `tryParsePartialArgsString` for that use case.
 */
/**
 * Repairs malformed JSON string literals by:
 * - escaping raw control characters inside strings
 * - doubling backslashes before invalid escape characters
 *
 * Only modifies content inside string literals (between unescaped double
 * quotes). Structural JSON (keys, braces, brackets, numbers) is untouched.
 */
export declare function repairJson(json: string): string;
/**
 * Parse JSON, attempting repair if the initial parse fails.
 * Returns `null` if the JSON cannot be parsed even after repair.
 */
export declare function parseJsonLoose(text: string): unknown | null;
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