@lukebergmann/lotide v1.0.0

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 @lukebergmann/lotide

Require it:

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

Call it:

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

Documentation

The following functions are currently implemented:

• assertArraysEqual(actual, expected): A function which takes in two arrays and console.log an appropriate message to the console.
• assertEqual(actual, expected): A function that compares the two values it takes in.
• assertObjectsEqual(arrayOne, arrayTwo): A function which takes in two objects and console.log's an appropriate message to the console.
• countLetters(sentence): A function that takes in a sentence (as a string) and then return a count of each of the letters in that sentence.
• countOnly(allItems, itemsToCount): A function that takes in a collection of items and returns a counts for a specific subset of those items.
• eqArrays(arrayOne, arrayTwo): A function which takes in two arrays and returns true or false, based on a perfect match.
• eqObjects(object1, object2): A function which takes in two objects and returns true or false, based on a perfect match.
• findKey(obj, callback): A function which takes in an object and a callback. It should scan the object and return the first key for which the callback returns a truthy value. If no key is found, then it should return undefined.
• findKeyByValue(obj, val): A function that scans an object and returns the first key which contains the given value. If no key with that given value is found, then it should return undefined.
• head(array): A function which returns the first item in the array.
• letterPositions(sentence):A function that will return all the indices (zero-based positions) in the string where each character is found.
• map(array, callback): A function that returns a new array based on the results of the callback function.
• middle(array): A function that which returns the center most item in an array. If items in an array are even, take the middle two elements. If the items in the array are 2 or less, return an empty array.
• tail(array): A function which returns the "tail" of an array: everything except for the first item (head) of the provided array.
• takeUntil(array, callback): A function that returns a "slice of the array with elements taken from the beginning." It should keep going until the callback/predicate returns a truthy value.
• without(source, itemsToRemove): A function which returns a subset of a given array, removing unwanted elements.