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 @jcronier/lotide

Require it:

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

Call it:

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

Documentation

The following functions are currently implemented:

• assertEqual(actual, expected): Asserts whether two primitive values are equal.
• assertArratsEqual(actual, expected): Asserts whether two arrays' elements are the same.
• assertObjectsEqual(actual, expected): Asserts whether two objects properties/values are the same.
• countLetters(sentence): Returns an object with the counts of all of the letters in a sentence.
• countOnly(allItems, itemsToRemove): Returns an object that contains the counts of all of the elements in a passed array that are dictated by a passed object.
• eqArrays(firstArray, secondArray): Takes two arrays and returns a boolean, based on a perfect match.
• eqObjects(firstObject, secondObject): Takes two objects and returns a boolean, based on a perfect match.
• findKey(object, callback): Takes an object and a callback function, returns the first key in the object which satisfies the callback function. If no key is found, it returns undefined.
• findKeyByValue(object, findValue): Returns the first key in a passed object which is equal to a given value. Returns undefined if no key found.
• flatten(nestedArrays): Takes in a array of nested arrays and returns a one-dimensional array.
• head(array): Returns the first element of an array.
• tail(array): Returns an array of all of the elements in a passed array, excluding the first element.
• middle(array): Returns the middle element of an array. If the array has an even amount of elements, an array of the middle two elements is returned.
• letterPositions(sentence): Returns an object which contains the indexed positions of all of the letters in a given sentence.
• map(array, callback): Returns a new array that includes the outcomes of the previous arrays elements called with the given callback function.
• takeUntil(array, callback): Returns an array that contains the elements of a given array from the start up until the first element for which a callback function returns a truthy value.
• without(source, itemsToRemove): Takes two arrays and returns a new array with the elements from the second array having been removed from the first.