React-Emotion：将defaultProps传递给组件重用

Question

I have this:

 import styled from 'react-emotion'; const Box = styled('div')` display: flex; flex-direction: ${p => p.direction}; `; Box.defaultProps = { direction: 'column' }; 

This works just fine when I use the Box component. The default props are there as expected.

However, when I reuse Box with styled, the default props do not get passed down:

 import styled from 'react-emotion'; import Box from './Box'; export const UniqResponsiveBox = styled(Box)` // some media queries and other new styles `; 

When I use UniqResponsiveBox, it does not have the defaultProps I declared for Box. The following workaround gets me thru, but seems redundant and I believe Im missing something that accomplishes this only using emotion.

 import styled from 'react-emotion'; const BoxContainer = styled('div')` display: flex; flex-direction: ${p => p.direction}; `; function Box(props) { return <BoxContainer {...props}/> } Box.defaultProps = { direction: 'column' } 

 import styled from 'react-emotion'; import Box from './Box'; export const UniqResponsiveBox = styled(Box)` // some responsive queries and other uniq styles `; // In this scenario, the default props are there because I passed them explicitly. Helppp! 

Answer 1

This particular issue is a bug inside Emotion - it was fixed in a pull request that was merged 11 days ago, so it should appear in the next release.

In the meantime, another workaround to avoid the additional function would simply be:

import styled from 'react-emotion';
import Box from './Box';

export const UniqResponsiveBox = styled(Box)`
  // some media queries and other new styles
`;

UniqResponsiveBox.defaultProps = Box.defaultProps