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noInlineStyles

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biome.json
{
"linter": {
"rules": {
"nursery": {
"noInlineStyles": "error"
}
}
}
}

Disallow the use of inline styles.

Inline styles via the style attribute make code harder to maintain and override, prevent reusability of styling, and can be a security concern when implementing a strict Content Security Policy (CSP).

Instead of inline styles, use CSS classes, CSS modules, or a styling library.

<div style={{ color: "red" }}>Error</div>
code-block.jsx:1:6 lint/nursery/noInlineStyles  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Unexpected style attribute.

> 1 │ <div style={{ color: “red” }}>Error</div>
^^^^^^^^^^^^^^^^^^^^^^^^
2 │

Inline styles make code harder to maintain, reduce reusability, and can prevent effective use of a strict Content Security Policy. Use external CSS classes or stylesheets instead.

This rule belongs to the nursery group, which means it is not yet stable and may change in the future. Visit https://biomejs.dev/linter/#nursery for more information.

Unsafe fix: Remove the style attribute.

1 │ <div·style={{·color:·red·}}>Error</div>
------------------------
React.createElement("div", { style: { color: "red" } });
code-block.js:1:30 lint/nursery/noInlineStyles  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Unexpected style attribute.

> 1 │ React.createElement(“div”, { style: { color: “red” } });
^^^^^^^^^^^^^^^^^^^^^^^
2 │

Inline styles make code harder to maintain, reduce reusability, and can prevent effective use of a strict Content Security Policy. Use external CSS classes or stylesheets instead.

This rule belongs to the nursery group, which means it is not yet stable and may change in the future. Visit https://biomejs.dev/linter/#nursery for more information.

Unsafe fix: Remove the style attribute.

1 │ React.createElement(“div”,·{·style:·{·color:·red·}·});
------------------------
<div className="text-red">Error</div>
React.createElement("div", { className: "container" });