noImplicitBoolean

import { Tabs, TabItem } from '@astrojs/starlight/components';

<Tabs> <TabItem label="JSX and TSX" icon="seti:javascript"> ## Summary - Rule available since: `v1.0.0` - Diagnostic Category: [`lint/style/noImplicitBoolean`](/reference/diagnostics#diagnostic-category) - This rule isn't recommended, so you need to enable it. - This rule has a [**safe**](/linter/#safe-fixes) fix. - The default severity of this rule is [**information**](/reference/diagnostics#information). - Sources: - Inspired from [`react/jsx-boolean-value`](https://github.com/jsx-eslint/eslint-plugin-react/blob/master/docs/rules/jsx-boolean-value.md)

How to configure

json

{
	"linter": {
		"rules": {
			"style": {
				"noImplicitBoolean": "error"
			}
		}
	}
}

Description

Disallow implicit true values on JSX boolean attributes

Examples

Invalid

jsx

<input disabled />

<pre class="language-text"><code class="language-text">code-block.jsx:1:8 <a href="https://biomejs.dev/linter/rules/no-implicit-boolean">lint/style/noImplicitBoolean</a> FIXABLE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ℹ Use explicit boolean values for boolean JSX props. > 1 │ <input disabled /> │ ^^^^^^^^ 2 │ ℹ Safe fix: Add explicit `true` literal for this attribute 1 │ <input·disabled={true}·/> │ +++++++ </code></pre>

Valid

jsx

<input disabled={false} />

jsx

<input disabled={''} />

jsx

<input disabled={0} />

jsx

<input disabled={undefined} />

jsx

<input disabled='false' />

</TabItem> </Tabs>

How to configure

Description

Examples

Invalid

Valid

Related links