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import { _indexOf } from './equals.js'import { reduce } from './reduce.js'
export function without(matchAgainst, source){  if (source === undefined){    return _source => without(matchAgainst, _source)  }
  return reduce(    (prev, current) =>      _indexOf(current, matchAgainst) > -1 ? prev : prev.concat(current),    [],    source  )}