fix: set two state but re-render once

[yuanyan]

let reRender = 0;
function MyComponent() {
  const [foo, setFoo] = useState(0);
  const [bar, setBar] = useState(0);
  return (
    <div>
      <span onClick={() => {
        setFoo(1);
        setBar(1);
       // Set two but re-render once
      }
      }>{reRender++}</span>
    </div>
  );
}

[yongningfu]

let reRender = 0;
function MyComponent() {
const [foo, setFoo] = useState(0);
const [bar, setBar] = useState(0);
return (

<span onClick={() => {
setFoo(1);
setBar(1);
// Set two but re-render once
}
}>{reRender++}

);
}

我跑了一下这个demo, click后 reRender为2，符合预期？ rax: 1.0.0 rax-cli: 1.2

[yuanyan]

let reRender = 0;
function MyComponent() {
const [foo, setFoo] = useState(0);
const [bar, setBar] = useState(0);
return (

<span onClick={() => {
setFoo(1);
setBar(1);
// Set two but re-render once
}
}>{reRender++}

);
}

我跑了一下这个demo, click后 reRender为2，符合预期？ rax: 1.0.0 rax-cli: 1.2

还没发版本

[yongningfu]

这块逻辑要下掉么? 因为目前的render或者forceUpdate更新是同步的，所以可能会和官方有些不一致的表现

比如把目前存在的case做个改造

    it(
      'in sync mode, useEffect is deferred and updates finish synchronously ' +
        '(in a single batch with different state)',
      () => {
        const container = createNodeElement('div');
        let logs = [];
        function Counter(props) {
          useEffect(
            () => {
              // Update multiple times. These should all be batched together in
              // a single render.
              render(<Counter count={2} />, container);
              render(<Counter count={3} />, container);
              render(<Counter count={4} />, container);
              render(<Counter count={5} />, container);
              render(<Counter count={6} />, container);
              render(<Counter count={7} />, container);
            },
            [],
          );
          logs.push('Count: ' + props.count);
          return <span>{'Count: ' + props.count}</span>;
        }
        render(<Counter count={0} />, container);
        // Even in sync mode, effects are deferred until after paint
        expect(logs).toEqual(['Count: 0']);
        expect(container.childNodes[0].childNodes[0].data).toEqual('Count: 0');
        // Now fire the effects
        logs = [];
        jest.runAllTimers();
        // There were multiple updates, but there should only be a
        // single render
        expect(logs).toEqual(['Count: 7']);
        expect(container.childNodes[0].childNodes[0].data).toEqual('Count: 7');
      },
    );

[yongningfu]

reviewed