text: 'use strict';
  
  const fs = require('fs');
  const shebangCommand = require('shebang-command');
  
  function readShebang(command) {
      // Read the first 150 bytes from the file
      let fd;
      const buffer = new Buffer(150);
  
      try {
          fd = fs.openSync(command, 'r');
          fs.readSync(fd, buffer, 0, 150, 0);
          fs.closeSync(fd);
      } catch (e) { /* Empty */ }
  
      // Attempt to extract shebang (null is returned if not a shebang)
      return shebangCommand(buffer.toString());
  }
  
  module.exports = readShebang;
  