parsePatch

parsePatch(patch: string, options?: DiffOptions): DiffPatchFile[]

interface DiffPatchFile {
  before: string;
  after: string;
  result: DiffResult;
}

List<DiffPatchFile> parsePatch(String patch, [DiffOptions? options]);

class DiffPatchFile {
  final String before;
  final String after;
  final DiffResult result;
}

A unified diff read back into comparisons, one entry per file the patch covers. result.before holds the lines the patch carried rather than the whole document, while each line's index is its own number in the file it came from.

formatPatch writes one.