export interface SafeParseResult<T> {
    ok: boolean;
    value?: T | undefined;
    error?: string | undefined;
}
export declare function safeParse<T = unknown>(input: string, maxBytes?: number): SafeParseResult<T>;
export declare function safeStringify(value: unknown, pretty?: boolean): string;
/**
 * Attempt to parse JSON5-style input and return a valid JSON string.
 * Handles trailing commas, line/block comments, and unquoted keys
 * that are common in provider output.
 *
 * Returns the sanitized string if it parses successfully as JSON,
 * or `null` if the input cannot be made valid. Callers use this to
 * decide whether to proceed with the parsed result or fall back to
 * raw handling.
 */
export declare function sanitizeJsonString(s: string): string | null;
/**
 * Strip a Markdown code-fence wrapper from a payload.
 *
 * Models occasionally return tool-call arguments wrapped in ```json fences
 * (or embedded in prose around one) instead of bare JSON. Returns the inner
 * content when the input starts with a fence (closing fence optional, so a
 * truncated stream still unwraps) or contains one complete fenced block;
 * returns null when no fence is present. Callers should only invoke this
 * after a direct parse failed, so fences inside legitimate string values are
 * never touched.
 */
export declare function stripCodeFences(s: string): string | null;
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