Function countLines

packages/core/src/tools/diffOptions.ts:22–35

(patch: Diff.ParsedDiff)

  userStr: string,
): DiffStat {
  const countLines = (patch: Diff.ParsedDiff) => {
    let added = 0;
    let removed = 0;
    patch.hunks.forEach((hunk: Diff.Hunk) => {
      hunk.lines.forEach((line: string) => {
        if (line.startsWith('+')) {
          added++;
        } else if (line.startsWith('-')) {
          removed++;
        }
      });
    });
    return { added, removed };
  };

  const patch = Diff.structuredPatch(
    fileName,