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export function sortBy(sortFn, list){  if (arguments.length === 1) return _list => sortBy(sortFn, _list)
  const clone = list.slice()
  return clone.sort((a, b) => {    const aSortResult = sortFn(a)    const bSortResult = sortFn(b)
    if (aSortResult === bSortResult) return 0
    return aSortResult < bSortResult ? -1 : 1  })}