export function removeWorsePrepubField594s(record) {
  // Remove lower-level entries:
  const fields594 = getRelevant5XXFields(record, false, true); // 500=false, 594=true
  nvdebugFieldArray(fields594, '  Candidates for non-best 594 b4 filtering: ', debugDev);
  const nonBest = fields594.filter(field => fields594.some(field2 => firstFieldHasBetterPrepubEncodingLevel(field2, field)));