module.exports = {
  abs: require("./abs"),
  alphabetize: require("./alphabetize"),
  clamp: require("./clamp"),
  combinations: require("./combinations"),
  cube: require("./cube"),
  contain: require("./contain"),
  decrement: require("./decrement"),
  difference: require("./difference"),
  endsWith: require("./endsWith"),
  exponent: require("./exponent"),
  factorial: require("./factorial"),
  fibonacci: require("./fibonacci"),
  firstUniqueChar: require("./firstUniqueChar"),
  floor: require("./floor"),
  increment: require("./increment"),
  indexOf: require("./indexOf"),
  last: require("./last"),
  max: require("./max"),
  mean: require("./mean"),
  median: require("./median"),
  min: require("./min"),
  mode: require("./mode"),
  permute: require("./permute"),
  power: require("./power"),
  prime: require("./prime"),
  product: require("./product"),
  pythagorean: require("./pythagorean"),
  quotient: require("./quotient"),
  remainder: require("./remainder"),
  removeLast: require("./removeLast"),
  reverse: require("./reverse"),
  rot13: require("./rot13"),
  square: require("./square"),
  squareRoot: require("./squareRoot"),
  sum: require("./sum"),
  swapCase: require("./sum"),
  uppercase: require("./uppercase"),
  without: require("./without"),
  xor: require("./xor"),
  average: require("./average"),
  isPalindrome: require("./isPalindrome"),
};

module.exports = {
  abs: require("./abs"),
  alphabetize: require("./alphabetize"),
  clamp: require("./clamp"),
  combinations: require("./combinations"),
  cube: require("./cube"),
  contain: require("./contain"),
  decrement: require("./decrement"),
  difference: require("./difference"),
  endsWith: require("./endsWith"),
  exponent: require("./exponent"),
  factorial: require("./factorial"),
  fibonacci: require("./fibonacci"),
  firstUniqueChar: require("./firstUniqueChar"),
  floor: require("./floor"),
  increment: require("./increment"),
  indexOf: require("./indexOf"),
  last: require("./last"),
  max: require("./max"),
  mean: require("./mean"),
  median: require("./median"),
  min: require("./min"),
  mode: require("./mode"),
  permute: require("./permute"),
  power: require("./power"),
  prime: require("./prime"),
  product: require("./product"),
  pythagorean: require("./pythagorean"),
  quotient: require("./quotient"),
  remainder: require("./remainder"),
  removeLast: require("./removeLast"),
  reverse: require("./reverse"),
  rot13: require("./rot13"),
  square: require("./square"),
  squareRoot: require("./squareRoot"),
  sum: require("./sum"),
  swapCase: require("./swapCase"),
  uppercase: require("./uppercase"),
  without: require("./without"),
  xor: require("./xor"),
  average: require("./average"),
  isPalindrome: require("./isPalindrome"),
};

Update index.js