function _normalizeValues(data, values, accessor0, type) {
  if (type === TIME_SCALE_TYPE && values.length === 1) {
    const attr0 = accessor0(data[0]);

    return [attr0, ...values];
  }

  return values;
}
Normilize array of values with a single value.
@param {Array} arr Array of data.
@param {Array} values Array of values.
@param {string} attr Attribute.
@param {string} type Type.
@private