e-lado/node_modules0/eslint-plugin-jsx-a11y/src/util/implicitRoles/img.js

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import { getProp, getLiteralPropValue } from 'jsx-ast-utils';

/**
 * Returns the implicit role for an img tag.
 */
export default function getImplicitRoleForImg(attributes) {
  const alt = getProp(attributes, 'alt');

  if (alt && getLiteralPropValue(alt) === '') {
    return 'presentation';
  }

  return 'img';
}