Realign all comments with heading /**

realign.js

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

function processFile (filePath) {
  const content = fs.readFileSync(filePath, 'utf-8');
  const lines = content.split('\n');
  let identBy = -1;
  let changeCount = 0;
  for (let i = 0; i < lines.length; i++) {
    const line = lines[i];
    const endPos = line.indexOf('*/');
    if (identBy < 0) {
      const startPos = line.indexOf('/**');
      if (endPos > 0) continue; // single line comment
      if (startPos < 0) continue;
      // all characters before are spaces..
      if (line.substring(0, startPos).trim().length === 0) identBy = startPos + 1;
      continue;
    }
    const commentPos = line.indexOf('*');
    if (commentPos < 0) continue;
    if (commentPos !== identBy) {
      changeCount++;
      lines[i] = '                             '.substring(0, identBy) + line.substring(commentPos);
    }
    if (endPos > -1) {
      identBy = -1;
    }
  }
  if (changeCount > 0) {
    const newContent = lines.join('\n');
    fs.writeFileSync(filePath, newContent, 'utf-8');
    console.log(changeCount + '\t' + filePath);
  }
}

async function loop (dirPath) {
  const dir = await fs.promises.opendir(dirPath);
  for await (const dirent of dir) {
    const direntPath = path.join(dirPath, dirent.name);
    if (dirent.isDirectory()) {
      if (dirent.name.indexOf('node_modules') < 0) loop(direntPath);
    } else {
      if (dirent.name.endsWith('.js')) {
        processFile(direntPath);
      }
    }
  }
}

(async () => {
  loop(__dirname);
})();