Re-creating the Lodash Library.js

const _ = {
    clamp (number, lower, upper) {
      var lowerClampedValue = Math.max(number,lower);
      var clampedValue = Math.min(lowerClampedValue,upper);
      return clampedValue;
    },
    inRange (number, start, end) {
      if (end === undefined) {
        end = start;
        start = 0;
      }
      if (start > end) {
        let temp = end;
        end = start;
        start = temp;
      }
      const isInRange = (start<=number && number<end)
      return isInRange
    },
    words (string) {
        var words = string.split(' ')
        return words
    },
    pad (string, length) {
      if (string.length >= length) {
        return string
      }
      const startPaddingLength = Math.floor((length-string.length)/2)
      const endPaddingLength = length - string.length - startPaddingLength
      const paddedString = ' '.repeat(startPaddingLength)+string+' '.repeat(endPaddingLength)
      return paddedString
    },
    has (object, key) {
      const hasValue = object[key];
      if (hasValue != undefined) {
        return true;
      }
      return false;
    },
    invert (object) {
      var invertedObject = {}
      for (key in object) {
        var originalValue = object[key]
        invertedObject[originalValue] = key
      }
      return invertedObject
    },
    findKey (object, predicate) {
      for (key in object) {
        var value = object[key]
        var predicateReturnValue = predicate(value)
        if (predicateReturnValue) {
          return key
        }
      }
      return undefined
    },
    drop (array, n) {
      if (n === undefined) {
        n = 1
      }
      var droppedArray = array.slice(n,array.length)
      return droppedArray
    },
    dropWhile (array, predicate) {
      const cb = (element, index) => {
        return !predicate(element, index, array)
      }
      let dropNumber = array.findIndex(cb)
      let droppedArray = this.drop(array,dropNumber)
      return droppedArray
    },
    chunk (array, size) {
      if (size === undefined) {
        size = 1
      }
      var arrayChunks = []
      for (let i = 0; i < array.length; i += size) {
        var arrayChunk = array.slice(i,i+size)
        arrayChunks.push(arrayChunk)
      }
      return arrayChunks
    }
  };
  
  // Do not write or modify code below this line.
  module.exports = _;