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2 commits

Author SHA1 Message Date
Eyo O. Eyo
7cbd9b0c1d
Resolve false positives with eslint no color rule (#204848)
## Summary

Fixes error in lint rule that resulted in false positives, also added a
test case to ascertain the issue has been fixed. For context the error
happens in instances where specific CSS declarations that are
derivatives of shorthand declarations that can apply color to the HTML
element or text nodes where found, because the check we had simply
checked if we got a string back instead of asserting that it was a falsy
value.

## Before
![Screenshot 2024-12-17 at 10 27
18 PM](https://github.com/user-attachments/assets/b0918d37-22f6-4778-a6d0-2cafe11b18e1)

![Screenshot 2024-12-17 at 8 03
33 PM](https://github.com/user-attachments/assets/d70c733d-e88f-42d6-956a-e266d53724f9)

## After

<img width="755" alt="Screenshot 2024-12-19 at 10 25 41"
src="https://github.com/user-attachments/assets/3e334785-d657-46ac-86c7-59d37f176c86"
/>


<img width="915" alt="Screenshot 2024-12-19 at 10 23 33"
src="https://github.com/user-attachments/assets/87860189-92c5-4807-b5b0-2520b9e75778"
/>

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2024-12-19 10:26:48 +00:00
Eyo O. Eyo
7370cc712e
ES Lint rules for css-in-js declarations within Kibana (#200703)
## Summary

Closes https://github.com/elastic/kibana-team/issues/1272

This PR adds implementation for eslint rules to help facilitate the
migration away from SASS files to leveraging the design tokens EUI
provides for styling.

The introduced rules  in this PR are as follows;

- #### No CSS Color values
  Consider; 

  ```tsx
  <EuiCode style={{ color: '#dd4040' }}>Hello World!</EuiCode>
  ```

this expression because it specifies the css color property, with a
valid [CSS color
value](https://developer.mozilla.org/en-US/docs/Web/CSS/color_value),
when the aforementioned rule is enabled depending on the set report
level set the user would get a feedback, see screenshot below;


<img width="735" alt="Screenshot 2024-11-20 at 12 46 17"
src="https://github.com/user-attachments/assets/d2f608dc-782c-4d83-88e6-92dfdd8f6101">

This rule also works for variables defined elsewhere in the code and
referenced as a value to the style prop, see screenshot below;

<img width="1658" alt="Screenshot 2024-11-26 at 13 29 45"
src="https://github.com/user-attachments/assets/f8aadf6b-318b-4c6a-b7c9-bb44fb867b58">

feedback will also be provided when some variable that is a literal
value is specified as a value for any earmarked property that should not
specify literal values.

<img width="1730" alt="Screenshot 2024-11-28 at 19 00 08"
src="https://github.com/user-attachments/assets/bc3a8674-9469-4c7a-b0c9-7a2bfa7f08dc">

feedback will be provided for referencing a member prop of some object
defined elsewhere as a value to any earmarked property that we have
deemed to not specify literal values

<img width="1676" alt="Screenshot 2024-11-29 at 11 36 44"
src="https://github.com/user-attachments/assets/c4537fbf-b2d8-46bb-ad5f-8582e8c9a932">

	Supports;
	- object values
	- object references
	- template literals
	- tagged templates 

This approach does not penalize variable declarations, only the usages
of any said variable when it doesn't conform to expectation

- #### Prefer CSS attributes for EUI components (optional)
  Consider; 

  ```tsx
<EuiCode style={{ someCSSProperty: 'propertyValue' }}>Hello
World!</EuiCode>
  ```
A declaration like the one above, will be regarded as an error and can
be fixed, when it's fixed it will be re-written as
  
  ```tsx
<EuiCode css={{ someCSSProperty: 'propertyValue' }}>Hello
World!</EuiCode>
  ```

	
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---------

Co-authored-by: kibanamachine <42973632+kibanamachine@users.noreply.github.com>
Co-authored-by: Elastic Machine <elasticmachine@users.noreply.github.com>
2024-12-16 15:56:52 +00:00