generateSampleCode.js

/**
 * Delete x files; Add x files => rename x files
 * Modify x files
 */

const fs = require('fs').promises;
const path = require('path');

const modify = async (x, folderPath) => {
  let renameCount = 0;
  let modifyCount = 0;

  // Rename x files; modify x files
  const renameFiles = async (dir) => {
    const pathList = await fs.readdir(dir);
    for (const item of pathList) {
      const currentPath = path.join(dir, item);
      const fileStat = await fs.stat(currentPath);

      if (fileStat.isDirectory()) {
        await renameFiles(currentPath);
      }
      if (fileStat.isFile() && !currentPath.includes('sls.js') && !currentPath.includes('serverless.yml')&& !currentPath.includes('index.html')) {
        if (renameCount < x) {
          console.log('renaming', currentPath);
          await fs.rename(currentPath, currentPath + '_modi');
          renameCount = renameCount + 1;
        }

        if (renameCount >= x && modifyCount < x) {
          console.log('modifying', currentPath);
          await fs.appendFile(currentPath, 'data to append');
          modifyCount = modifyCount + 1;
        }
      }
      if (renameCount >= x && modifyCount >= x) return;
    }
  }

  await renameFiles(folderPath);

}

modify(10, './5MB/original copy')
modify(300, './5MB/original copy 2')
modify(10, './50MB/original copy')
modify(300, './50MB/original copy 2')
modify(5000, './50MB/original copy 3')
modify(10, './400MB/original copy')
modify(300, './400MB/original copy 2')
modify(5000, './400MB/original copy 3')