/**
 * Convert a live-config glob pattern to a RegExp.
 *
 * Supports `**` across path segments, `*` within one segment, and `?` for one
 * character. Callers normalize project-relative paths to forward slashes.
 */
export function livePathGlobToRegex(pattern) {
  let re = '';
  let i = 0;
  while (i < pattern.length) {
    const c = pattern[i];
    if (c === '*') {
      if (pattern[i + 1] === '*') {
        if (pattern[i + 2] === '/') {
          re += '(?:.*/)?';
          i += 3;
        } else {
          re += '.*';
          i += 2;
        }
      } else {
        re += '[^/]*';
        i += 1;
      }
    } else if (c === '?') {
      re += '[^/]';
      i += 1;
    } else if (/[.+^${}()|[\]\\]/.test(c)) {
      re += `\\${c}`;
      i += 1;
    } else {
      re += c;
      i += 1;
    }
  }
  return new RegExp(`^${re}$`);
}