Enhancemenet: add :defined pseudo class, fix #4080
#4081
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alexander-akait
approved these changes
May 14, 2019
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@lkraav could you, please, add test to https://github.com/stylelint/stylelint/blob/master/lib/rules/selector-pseudo-class-no-unknown/__tests__/index.js? |
Best practice for eliminating FOUC when using custom elements [1]
```css
app-drawer:not(:defined) {
/* Pre-style, give layout, replicate app-drawer's eventual styles, etc. */
display: inline-block;
height: 100vh;
opacity: 0;
transition: opacity 0.3s ease-in-out;
}
```
[1]: https://developers.google.com/web/fundamentals/web-components/customelements#prestyle
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Not a 100% sure of what I was doing here, but maybe good enough? PS it seemed like quite many pseudo elements are missing tests? |
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Looks like you need to run |
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Changelog:
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Best practice for eliminating FOUC when using custom elements 1
Closes #4080
No, it's self explanatory.