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beta.20 bug #841

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fwh1990 opened this issue Feb 5, 2018 · 7 comments
Closed

beta.20 bug #841

fwh1990 opened this issue Feb 5, 2018 · 7 comments
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@theKashey
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@fwh1990
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fwh1990 commented Feb 5, 2018

Beta.20 cause rendering only element "012" in the browser.

ReactDom.render(
  <App />,
  document.getElementById('root')
);
<body>
  <div id="root">012</div>
</body>

node 9.5.0
babel 7.0.0.beta39
webpack 3.10.0

Rollback to beta.19 worked!
@theKashey
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Unable to reproduce - all the tests I have are working.
Could you please provide a bit more code?

@fwh1990
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fwh1990 commented Feb 5, 2018 •
edited

Open chrome devTools, switch to Elements

<div id="root">
  "0"
  "1"
  "2"
</div>

I just realize my root-component method AppComponent.render looks like:

render() {
   return [
     <A key="axxx" />,
     <B key="bxxx" />,
     <C key="cxxx" />,
  ];
}

Return elements[] is legal in React16+

Any relation?

@fwh1990
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fwh1990 commented Feb 5, 2018 

ReactDOM.render(
  <Provider store={store}>
    <AppComponent />
  </Provider>,
  document.getElementById('root')
);

@fwh1990
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fwh1990 commented Feb 5, 2018

When I reduce array to 2 items, the render message turn to:

<div id="root">
  "0"
  "1"
</div>

@theKashey
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And there is no exception in console?

@theKashey theKashey self-assigned this Feb 5, 2018
@theKashey
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I've found a problem :(

@theKashey theKashey mentioned this issue Feb 5, 2018
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@gregberge
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Should be fixed in beta.21.

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@gregberge @theKashey @fwh1990