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 @jaedentw/lotide

Require it:

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

Call it:

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

Documentation

The following functions are currently implemented:

• map(...): Takes in an array and a callback function. Returns a new array based on the results of the callback function. Does not alter original array or callback.
• head(...): Returns the first element in an array. Does not alter original array.
• tail(...): Returns all elements except the first of an array. Does not alter original array.
• middle(...): Returns the middle most element/s of an array. Does not alter original array.
• flatten(...): Integrates the values of single layer nested arrays into the parent array. Does not alter original array.
• without(...): Takes in a source array and a itemsToRemove array. Returns an array of all elements of the source array that are not listed in itemsToRemove array. Does not alter original arrays.
• eqArrays(...): Returns true if the given arrays are a perfect match, and false if they are not.
• eqObjects(...): Returns true if the given Objects are a perfect match, and false if they are not.
• takeUntil(...): Takes in an array and a callback function. Removes elements from the given array until the callback returns a truthy value. Returns a new array, does not alter the original array or callback.
• countOnly(...): Takes in array and an object. It will return an object containing counts of everything that the input object listed. Does not alter the original array or object.
• countLetters(...): The function should take in a string and then return a count of each of the letters in that sentence, in the form of an object. Does not alter the original string.
• letterPositions(...): Takes in a string and returns an object that contains the indicies of each letter within. Does not alter the original string.
• findKey(...): Takes in an object and a callback. Returns the first key for which the callback returns a truthy value. If no key is found, then it returns undefined. Does not alter the original object or callback.
• findKeyByValue(...): Takes in an object and a value. Will return the first key of the given object, which contains the given value. If no key with the given value is found, then it will return undefined.
• assertEqual(...): Confirms that two values are equal and console logs a confirmation.
• assertArraysEqual(...): Confirms that two arrays are equal and console logs a confirmation.
• assertObjectsEqual(...): Confirms that two objects are equal and console logs a confirmation.