A clone of the lodash JavaScript library to practice creating various types of functions using JS.

Usage no npm install needed!

<script type="module">
  import abemsiLotide from 'https://cdn.skypack.dev/@abemsi/lotide';



A mini clone of the Lodash library.


BEWARE: This library was published for learning purposes. It is not intended for use in production-grade software.

This project was created and published by me as part of my learnings at Lighthouse Labs.


Install it:

npm install @abemsi/lotide

Require it:

const _ = require('@abemsi/lotide');

Call it:

const results = _.tail([1, 2, 3]) // => [2, 3]


The following functions are currently implemented:

  • assertArraysEqual = function(actual, expected): Takes in two arrays and console.logs whether those arrays match.
  • assertEqual = function(actual, expected): Asserts whether two arrays are equal.
  • assertObjectsEqual = function(actual, expected: Takes in two objects and console.logs whether those arrays match.
  • countLetters = function(string): Counts letters in a string.
  • countOnly = function(allItems, itemsToCount): Counts specific items in an array.
  • eqArrays = function(array1, array2): Can compare two arrays for a perfect match.
  • eqObjects = function(object1, object2): Takes in two objects and returns true or false, based on a perfect match.
  • findKey = function(object, callback): Takes in an object and a callback, returning the first key that the callback returns truthy.
  • findKeyByValue = function(object, value): Takes in an object and returns the first key which contains the given value.
  • flatten = function(array): Takes in an array of arrays and returns a flattened version.
  • head = function(array): Returns the first item in an array.
  • letterPositions = function(sentence): Returns all the indices (zero-based positions) in the string where each character is found.
  • map = function(array, callback): Creates a new array with the results of calling a provided function on every element in the calling array.
  • middle = function(array): Returns the middle element of an array.
  • tail = function(array): Returns every element in an array except for the head.
  • takeUntil = function(array, callback): Returns a slice of an array until callback returns a truthy value.
  • without = function(source, itemsToRemove): Returns a new array with only elements that are not present in the second array when compared to the first.