vendors/execa.js/readShebang
    function readShebang(command) {
      const size = 150;
      const buffer = Buffer.alloc(size);
      let fd;
      try {
        fd = fs.openSync(command, "r");
        fs.readSync(fd, buffer, 0, size, 0);
        fs.closeSync(fd);
      } catch (e) {
      }
      return shebangCommand(buffer.toString());
    }