medialize/ally.js

export default {
  element: 'label',
  mutate: function(element) {
    element.setAttribute('tabindex', '-1');
  },
  validate: function(element, focusTarget, _document) {
    // force layout in Chrome 49, otherwise the element won't be focusable
    /* eslint-disable no-unused-vars */
    const variableToPreventDeadCodeElimination = element.offsetHeight;
    /* eslint-enable no-unused-vars */
    element.focus();
    return _document.activeElement === element;
  },
};