Lotide

A mini clone of the Lodash library.

Purpose

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.

Usage

Install it:

npm install @davidgir/lotide

Require it:

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

Call it:

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

Documentation

The following functions are currently implemented:

Function Descriptions

• head(array): Takes an array as an argument and returns the first element.
• tail(array): Takes an array and returns a new array with all elements except the first.
• middle(array): Returns the middle element of an array; if the array has an even number of elements, it returns an array containing the two middle elements.
• assertArraysEqual(arr1, arr2): Compares two arrays and prints an assertion message indicating if they are equal or not.
• assertEqual(val1, val2): Compares two values (can be of any type) and prints an assertion message indicating if they are equal or not.
• assertObjectsEqual(obj1, obj2): Compares two objects and prints an assertion message indicating if they are deeply equal or not.
• countLetters(string): Takes a string and returns an object that counts the occurrence of each letter in the string.
• countOnly(array, itemsToCount): Takes an array and an object specifying what to count. Returns an object representing the counts of each specified element.
• eqArrays(arr1, arr2): Takes two arrays and returns true if they are deeply equal or false otherwise.
• eqObjects(obj1, obj2): Takes two objects and returns true if they are deeply equal or false otherwise.
• findKey(object, callback): Takes an object and a callback function, returns the first key for which the callback returns a truthy value.
• findKeyByValue(object, value): Searches for a key in an object where the key's value matches the provided value.
• flatten(array): Takes a nested array and returns a new flat array.
• letterPositions(sentence): Takes a string and returns an object with the indices of each letter in the string.
• map(array, callback): Takes an array and a callback function, returns a new array with each element being the result of the callback function.
• takeUntil(array, callback): Takes an array and a callback function, returns a new array with elements from the beginning of the original array until the callback function returns a truthy value.
• without(array, itemsToRemove): Takes an array and an array of items to remove, returns a new array with all elements except those specified in itemsToRemove.