react/no-direct-mutation-state 正确性 
它做什么 
限制编码器不能直接更改 this.state 的值
这有何不妥? 
之后调用 setState() 可能替换您所做的修改
示例 
jsx
 // error
 var Hello = createReactClass({
   componentDidMount: function() {
     this.state.name = this.props.name.toUpperCase();
   },
   render: function() {
     return <div>Hello {this.state.name}</div>;
   }
 });
 class Hello extends React.Component {
   constructor(props) {
     super(props)
     doSomethingAsync(() => {
       this.state = 'bad';
     });
   }
 }
 // success
 var Hello = createReactClass({
   componentDidMount: function() {
     this.setState({
       name: this.props.name.toUpperCase();
     });
   },
   render: function() {
     return <div>Hello {this.state.name}</div>;
   }
 });
 class Hello extends React.Component {
   constructor(props) {
     super(props)
     this.state = {
       foo: 'bar',
     }
   }
 }