no-redundant-roles

Some HTML elements have native semantics that are implemented by the browser. This includes default/implicit ARIA roles. Setting an ARIA role that matches its default/implicit role is redundant since it is already set by the browser.

References

1. w3

Rule details

The default options for this rule allow an implicit role of navigation to be applied to a nav element as is advised by w3. The options are provided as an object keyed by HTML element name; the value is an array of implicit ARIA roles that are allowed on the specified element.

{
  'jsx-a11y/no-redundant-roles': [
  'error',
  {
    nav: ['navigation'],
  },
}

Succeed

<div />
<button role="presentation" />
<MyComponent role="main" />

Fail

<button role="button" />
<img role="img" src="foo.jpg" />