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Rslint

    no-invalid-html-attribute

    Added in v0.9.1

    Configuration

    rslint.config.ts
    import { defineConfig, reactPlugin } from '@rslint/core';

export default defineConfig([
  reactPlugin.configs.recommended,
  {
    rules: {
      'react/no-invalid-html-attribute': 'error',
    },
  },
]);

    Rule Details

    This rule disallows invalid values for selected HTML attributes. By default, it validates rel values on HTML JSX elements and React.createElement calls. It reports values that are unknown, used on the wrong element, not separated by single spaces, or used without a required companion value.

    Examples of incorrect code for this rule:

    <a rel="canonical" />;
<link rel="shortcut" />;
<a rel="noopener  noreferrer" />;
React.createElement('a', { rel: 'not-a-rel-value' });

    Examples of correct code for this rule:

    <a rel="noopener noreferrer" />;
<link rel="canonical" />;
<link rel="shortcut icon" />;
React.createElement('form', { rel: 'external' });

    Options

    The rule accepts one positional array listing the attributes to validate. The only supported attribute is rel; omitting the option is equivalent to selecting rel.

    Examples of correct code for this rule with no selected attributes:

    { "react/no-invalid-html-attribute": ["error", []] }
    <a rel="not-a-rel-value" />;

    Differences from ESLint

    For React.createElement calls, rslint only validates rel values that are string literals. Numeric, BigInt, boolean, null, and RegExp literals are not sent through the string-value lookup or suggestion path:

    React.createElement('a', { rel: 1 });
React.createElement('a', { rel: 1n });
React.createElement('a', { rel: /invalid/ });

    This intentionally differs from eslint-plugin-react v7.37.5. Its checkPropValidValue branch treats every ESTree Literal as though value.value were a string. That can produce malformed suggestions such as rel: for a number or rel: // for a RegExp. rslint skips these non-string values so suggestions never produce syntactically invalid code.

    Original Documentation