function camelCase(property) {
  var fixed = cache$2[property];
  if (fixed) {
    return fixed;
  }
  return cache$2[property] = property.replace(/-([a-z])/g, function ($, letter) {
    return letter.toUpperCase();
  });
}
Camelcase a property name into its JavaScript notation (e.g.
"background-color" ==> "backgroundColor"). Camelcasing is used to
normalize property names between and across calls.