recursive-file-rename.js

const fs = require('fs');
const cp = require('child_process');

const testFolder = './src';

function getFiles(dir, files_ = []) {
  const files = fs.readdirSync(dir);

  Object.values(files).forEach((fileName) => {
    const name = `${dir}/${fileName}`;

    if (fs.statSync(name).isDirectory()) {
      getFiles(name, files_);
    } else if (name.endsWith('scss.d.ts')) {
      files_.push(name);
    }
  });

  return files_;
}

getFiles(testFolder).forEach((fileNameWithPath) => {
  cp.exec(`rm -rf ${fileNameWithPath}`);
});