ES6 Dynamic accessors

dynamic-accessors.js

describe('dynamic accessors', () => {
    
    it('a dynamic getter name is enclosed in [ and ]', function() {
      const balance = 'yourMoney';
      class YourAccount {
        get [balance]() { return -Infinity; }
      }
      
      assert.equal(new YourAccount().yourMoney, -Infinity);
    });
    
    it('a dynamic setter name as well', function() {
      const propertyName = 'balance';
      class MyAccount {
        get [propertyName]() { return this.amount; }
        set [propertyName](amount) { this.amount = 23; }
      }
      
      const account = new MyAccount();
      account.balance = 23; // 42;
      assert.equal(account.balance, 23);
    });
  });
  
});