Function computeGutterWidth

src/components/StructuredDiff.tsx:46–49

(patch: StructuredPatchHunk)

// right-aligned line number (max_digits) + space. Depends only on patch
// identity (the WeakMap key), so it's cacheable alongside the NAPI output.
function computeGutterWidth(patch: StructuredPatchHunk): number {
  const maxLineNumber = Math.max(patch.oldStart + patch.oldLines - 1, patch.newStart + patch.newLines - 1, 1);
  return maxLineNumber.toString().length + 3; // marker + 2 padding spaces
}
function renderColorDiff(patch: StructuredPatchHunk, firstLine: string | null, filePath: string, fileContent: string | null, theme: string, width: number, dim: boolean, splitGutter: boolean): CachedRender | null {
  const ColorDiff = expectColorDiff();
  if (!ColorDiff) return null;