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 @tianhaozhang/lotide

Require it:

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

Call it:

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

Documentation

The following functions are currently implemented:

• head(): Returns the first element in a array.
• tail(): Returns every element in a array except the head (first element) of the array.
• middle(): Returns the middle element of a string.
• eqArrays(): Checks if 2 arrays are equal to each other.
• assertEqual(): Checks if the 2 inputed variables are equal.
• assertArraysEqual(): Take in two arrays and console.log an appropriate message to the console.
• assertObjectsEqual(): Take in two objects and console.log an appropriate message to the console.
• countLetters(): Take in a sentence (as a string) and then return a count of each of the letters in that sentence.
• countOnly(): Take in a collection of items and return counts for a specific subset of those items.
• eqObjects(): Take in two objects and returns true or false, based on a perfect match.
• findKey(): 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(): Takes in an object and a value. It should scan the object and return the first key which contains the given value. If no key with that given value is found, then it should return undefined.
• letterPositions(): Return all the indices (zero-based positions) in the string where each character is found.
• map(): Take in two arguments, an array to map and a callback function. The map function will return a new array based on the results of the callback function.
• takeUntil(): Keep collecting items from a provided array until the callback provided returns a truthy value.
• without(): Take in a source array and a itemsToRemove array. It should return a new array with only those elements from source that are not present in the itemsToRemove array.