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EsLint Plugin Lit A11y: no-redundant-role

Enforce explicit role property is not the same as implicit/default role property on element.

Some HTML elements have implicit roles. For example, a <dialog> element has the implicit role dialog. For those elements, there's no need to define a role unless you need to explicity change the existing one.

Rule Details

This rule aims to prevent redundant use of the role attribute.

Examples of incorrect code for this rule:

html` <dialog role="dialog"></dialog> `;
html` <button role="button"></button> `;
html` <a href="foo" role="link"></a> `;

Examples of correct code for this rule:

html` <img role="presentation" /> `;

When Not To Use It

If you do not use ARIA roles in your lit-html templates.

Further Reading