@peterdinh/lotide

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 @peterdinh/lotide

Require it:

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

Call it:

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

Documentation

The following functions are currently implemented:

• assertArraysEqual(arr1, arr2): Takes in two arrays, compares them and console.log an appropriate message to the console.
• assertEqual(actual, expected): Takes in two values and and print out a message telling us if they match or not.
• assertObjectsEqual(actual, expected): Takes in two objects, compares them and console.log and appropriate message to the console.
• countLetters(sentence): Takes in a sentence (as a string) and then return a count of each of the letters in that sentence.
• countOnly(allItems, itemsToCount): Takes in a collection of items and returns counts for a specific subset of those items.
• eqArrays(arr1, arr2): Takes in two arrays and returns true or false, based on a perfect match.
• eqObjects(object1, object2): Takes in two objects, compares the objects and returns true or false.
• findKey(object, callback): Takes in an object and a callback, scans the object and returns the first key for which the callback returns a truthy value.
• findKeyByValue(object, value): Takes in an object and a value, scans the object and return the first key which contains the given value.
• flatten(arr): Takes in a multi-dimentional array and returns a flatten version.
• head(arr): Takes in an array and returns the fist element of that array.
• letterPositions(sentence): Takes in a sentence and returns all the indices (zero-based positions) in the string where each characcter is found.
• map(array, callback): A function that takes in an array and a callback and returns a new array based on the results of the callback on each item in the array.
• middle(arr): Takes in an array, and returns the middle most element(s) of an array.
• tail(arr): Takes in an array and returns a new array with every element BUT the first one.
• takeUntil(array, callback): Takes in an array and a callback, then returns an array containing only the elements in the array that appear before the one that caused the callback to return truthy.
• without(source, itemsToRemove): Takes in a source array and a itemsToRemove array. Returns a new array with only those elements from source that are not present in the itemsToRemove array.