// bad
a.b.c.d.e.f();

// good
const e = a.b.c.e;
e.f();

// bad
sayHello("hello aaaaa, I am xxxxx, I live in xxxx"); // too long var string

// good
var word = "hello aaaaa, I am xxxxx, I live in xxxx";
sayHello(word);

// bad
switch (ext) {
  case ".js":
    break;
  case ".ts":
    break;
  case ".jsx":
    break;
  case ".css":
    break;
  case ".sass":
    break;
  case ".scss":
    break;
  case ".jpg":
    break;
  case ".png":
    break;
  default:
}

// good
const visitor = {
  ".js": function() {},
  ".ts": function() {},
  ".jsx": function() {},
  ".css": function() {},
  ".sass": function() {},
  ".scss": function() {},
  ".jpg": function() {},
  ".png": function() {}
};

const handler = visitor[ext];

if (handler) {
  handler();
} else {
}