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 @vquintero/lotide

Require it:

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

Call it:

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

Documentation

The following functions are currently implemented:

• head(arr): Function takes an array and extracts the first element, then returns it.
• tail(arr): Function takes an array and returns a shallow copy of it.
• middle(arr): Function takes array and returns an array with the middle element or elements of the input array.
• countLetters(sentence): Function takes a sentence and will return a count of each letter.
• countOnly(allItems, itemsToCount): Function takes an array of items and returns a count for a specific subset of those items.
• eqArrays(arr1, arr2): Function takes in two arrays and returns true or false, based on a perfect match.
• eqObjects(object1, object2): Function takes two objects and returns true if both objects have identical keys with identical values.
• findKey(object, callback): Function takes object and returns the first key for which the callback returns a truthy value.
• findKeyByValue(object, inputValue): Function takes object and a variable, and returns the first property key that matches with the value given.
• flatten(arr): Function takes in a nested array, one level deep, and 'flattens' it by turning it into an unnested array.
• letterPositions(sentence): Function takes a string/sentence and returns an object with properties of each letter as keys and an array containing the original indeces for that letter.
• takeUntil(array, callback): Function takes an array and callback function. It returns a slice of the array with elements taken from the beggining, until the callback returns a truthy value.
• without(sourceArr, itemsToRemove): Function takes a source array and a second array with the items to remove from the source array. It returns a third array similar to the source array but without the elements from itemsToRemove.
• assertArraysEqual(actual, expected): Function takes in two arrays and prints whether they are equal or not.
• assertEqual(actual, expected): Function takes two variables and compares them with the strict equality operator, and prints whether they are equal or not.
• assertObjectsEqual(actual, expected): Function takes two objects, compares them and prints whether they are equal or not.