File Modification Diff Utility (utils/diff.ts)

Computes diffs between original and modified files, returns minimal representation as diff or full content, and provides regex for modifications tag.

// Source: https://github.com/mperkins0155/bolt.diy_V2.0 | License: MIT | Copyright 2024 StackBlitz, Inc
// Provided via justclaw.it.com; keep this notice with the code.
import { createTwoFilesPatch } from 'diff';
import { MODIFICATIONS_TAG_NAME } from './constants';
import type { FileMap } from '~/lib/stores/files';

export const modificationsRegex = new RegExp(
  `^<${MODIFICATIONS_TAG_NAME}>[\\s\\S]*?<\\/${MODIFICATIONS_TAG_NAME}>\\s+`,
  'g',
);

interface ModifiedFile {
  type: 'diff' | 'file';
  content: string;
}

type FileModifications = Record<string, ModifiedFile>;

export function computeFileModifications(files: FileMap, modifiedFiles: Map<string, string>) {
  const modifications: FileModifications = {};

  let hasModifiedFiles = false;

  for (const [filePath, originalContent] 

... (truncated -- full source via MCP)