Answers of Es6katas [http://es6katas.org/]

object-literals-basics.js

// 9: object-literals - basics
// To do: make all tests pass, leave the assert lines unchanged!

describe('The object literal allows for new shorthands', () => {

  const x = 1;
  const y = 2;

  describe('with variables', () => {
    it('the short version for `{x: x}` is {x}', () => {
      const short = {x};
      assert.deepEqual(short, {x: x});
    });
    it('works with multiple variables too', () => {
      const short = {x, y};
      assert.deepEqual(short, {x: x, y: y});
    });
  });
  
  describe('with methods', () => {
    
    const func = () => func;

    it('using the name only uses it as key', () => {
      const short = {func};
      assert.deepEqual(short, {func: func});
    });
    
    it('a different key must be given explicitly, just like before ES6', () => {
      const short = {otherKey:func};
      assert.deepEqual(short, {otherKey: func});
    });
    
    it('inline functions, can written as `obj={func(){}}` instead of `obj={func:function(){}}`', () => {
      const short = {
        inlineFunc(){ return 'I am inline';}
      };
      assert.deepEqual(short.inlineFunc(), 'I am inline');
    });
  });
  
});

More details: http://es6.ruanyifeng.com/?search=%E6%96%B9%E6%B3%95&x=0&y=0#docs/object