Why jump to ES6

class Person
  constructor: (@name) ->

  say_hello: ->
    console.log "Hello, my name's #{@name}"

new Person('Ben').say_hello()

class Person {
  constructor(name) {
    this.name = name;
  }
  
  say_hello() {
    console.log(`Hello, my name's ${this.name}'`);
  }
}

new Person('Ben').say_hello()

square = (x) -> x * x

square = (x) => x * x;

fill = (container, liquid = "coffee") ->
  "Filling the #{container} with #{liquid}..."

fill = (container, liquid = "coffee") => {
  return `Filling the ${container} with ${liquid}`;
};

helpers =
  version: "1.0.0"
  log: () -> console.log "Logging..."

helpers = {
  version: "1.0.0",
  log() { console.log("Logging...") }
}

class Tab
  constructor: ->
    $('.el').on 'click', @clicked
  
  clicked: =>
    conosle.log 'clicked'

class Tab {
  constructor() {
    $('.el').on('click', () => this.clicked);
  }
  
  clicked() {
    console.log('clicked');
  }
}

theBait   = 1000
theSwitch = 0

[theBait, theSwitch] = [theSwitch, theBait]

var theBait = 1000
var theSwitch = 0

var [theBait, theSwitch] = [theSwitch, theBait]

weatherReport = (location) ->
  [location, 72, "Mostly Sunny"]

[city, temp, forecast] = weatherReport "Berkeley, CA"

var weatherReport = (location) => {
  return [location, 72, "Mostly sunny"];
}

var [city, temp, forecast] = weatherReport("Bristol, UK");

class Person
  constructor: (options) ->
    {@name, @age, @height = 'average'} = options

tim = new Person name: 'Tim', age: 4

class Person {
  constructor(options) {
    [this.name, this.age, this.height = 'average'] = options;
  }
}

tim = new Person({name: 'Tim', age: 4});