扩展运算符是es6的，不是es7的

[WisestCoder]

redux-tutorial-cn/04_get-state.js

Lines 93 to 94 in f89c4c5

	// 这全要感谢牛逼的 ES7 notation (Object Spread): { ...state, message: action.value }
	// 4) 还要注意：之所以这个例子能用ES7 Object Spread notation ，是因为它只对 state 里的

[camsong]

It's ES6 according to https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Spread_syntax