1import { logger } from './logger.js';
2 
3export function get_nested_value<T = unknown>(data: unknown, path: number[], def?: T): T {
4  let cur: unknown = data;
5  for (let i = 0; i < path.length; i++) {
6    const k = path[i]!;
7    if (!Array.isArray(cur)) {
8      logger.debug(`Safe navigation: path ${JSON.stringify(path)} ended at index ${i} (key '${k}'), returning default.`);
9      return def as T;
10    }
11    cur = cur[k];
12    if (cur === undefined) {
13      logger.debug(`Safe navigation: path ${JSON.stringify(path)} ended at index ${i} (key '${k}'), returning default.`);
14      return def as T;
15    }
16  }
17 
18  if (cur == null && def !== undefined) return def as T;
19  return cur as T;
20}
21 
22export function extract_json_from_response(text: string): unknown {
23  if (typeof text !== 'string') {
24    throw new TypeError(`Input text is expected to be a string, got ${typeof text} instead.`);
25  }
26 
27  let last: unknown = undefined;
28  for (const line of text.split(/\r?\n/)) {
29    const trimmed = line.trim();
30    if (!trimmed) continue;
31    try {
32      last = JSON.parse(trimmed) as unknown;
33    } catch {}
34  }
35 
36  if (last === undefined) {
37    throw new Error('Could not find a valid JSON object or array in the response.');
38  }
39 
40  return last;
41}
42 
43export const extractJsonFromResponse = extract_json_from_response;
44export const getNestedValue = get_nested_value;
45