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 Joshua Tan as part of his learnings at Lighthouse Labs.

Usage

Install it:

npm install @joshtantan/lotide

Require it:

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

Call it:

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

Documentation

The following functions are currently implemented:

• assertEqual(actual, expected): checks if actual === expected and logs result to console
• eqArrays(arr1, arr2): checks if each element of arr1 === each element of arr2 and returns a boolean
• assertArraysEqual(actualArr, expectedArr, expectedResult): checks if each element of actualArr === each element of expectedArr and logs result to console
• eqObjects(obj1, obj2): checks if each property-value of obj1 === each property-value of obj2 and returns a boolean
• assertObjectsEqual(actual, expected): checks if each property-value of actual === each property-value of expected and logs result to console
• countOnly(allItems, itemsToCount): counts the frequency of each item listed in the object, itemsToCount, in the array, allItems, and returns the results in an object
• countLetters(words): counts the frequency of each letter in the string, words, and returns the results in an object
• letterPositions(sentence): finds the indices of each character in the string, sentence, and returns the results in an object
• findKey(obj, callback): finds the first property key in the object, obj, that causes the callback function, callback, to return true and returns it
• findKeyByValue(inputObj, targetVal): finds the first property key in the object, inputObj, whose value matches that of the input, targetVal, and returns it
• map(array, callback): returns a new array that is populated with the results of the function, callback, being applied on each element in the array, array
• takeUntil(arr, callback): checks if each element of the array, arr, passed in the function, callback, one-by-one in respective order returns true and adds it to a new array until the first element that causes the function, callback, to return false
• without(inputArr, removeArr): returns a new array that is populated with the elements of the array, inputArr, that do not match any elements in the array, removeArr
• head(arr): returns the first element of the array, arr
• tail(arr): returns the array, arr, without its first element
• middle(arr): returns the middle 1 (if arr has an odd number of elements) or 2 (if arr has an even number of elements) elements in the array, arr