axe-core/lib/rules/heading-matches.js

Accessibility engine for automated Web UI testing

function headingMatches(node) {
  // Get all valid roles
  let explicitRoles;
  if (node.hasAttribute('role')) {
    explicitRoles = node
      .getAttribute('role')
      .split(/\s+/i)
      .filter(axe.commons.aria.isValidRole);
  }

  // Check valid roles if there are any, otherwise fall back to the inherited role
  if (explicitRoles && explicitRoles.length > 0) {
    return explicitRoles.includes('heading');
  } else {
    return axe.commons.aria.implicitRole(node) === 'heading';
  }
}

export default headingMatches;