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 @patrick-204/lotide

Require it:

const _ = require('@patrick-204/lotide');

Call it:

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

Documentation

The following functions are currently implemented:

• head(...): returns the first element from the array received as an argument
• tail(...): returns every element except the first from the array received as an argument
• middle(...): returns the middle element(s) except the first from the array received as an argument
• assertArraysEqual(...): receives 2 arrays as arguments and returns assertion passed/failed, depending on if they are an exact match
• assertEqual(...): receives 2 arguments and returns assertion passed/failed, depending on if they are an exact match - does not work for arrays
• assertObjectsEqual(...): receives 2 objects as arguments and returns assertion passed/failed, depending on if they are an exact match
• countLetters(...): receives a sentence (as a string) as an argument and then returns an object that contains the count of each of the letters in that sentence.
• countOnly(...): receives an array and an object as arguments. It will return an object containing counts of everything that the input object listed
• eqArrays(...): receives 2 arrays as arguments and returnstrue or false, based on a perfect match
• eqObjects(...): receives 2 objects as arguments and returns true if both objects have identical keys with identical values. Otherwise, returns false
• findKey(...): receives an object and a callback as arguments. It scans the object and returns the first key for which the callback returns a truthy value. If no key is found, then it returns undefined.
• findKeyByValue(...): receives an object and a value as arguments. It scans the object and returns the first key which contains the given value. If no key with that given value is found, then it returns undefined
• letterPositions(...): receives a string as an argument. Returns an object containing all the indices(zero-based positions) in the string where each character is found
• takeUntil(...): receives 2 args: array to work with; callback function. The function will return a slice of elements from the start of the array. It will keep returning until it receieves a truthy value. The callback will only take in one arg - the item in the array
• without(...): receives an array and a list of unwanted elements from that array as an argument. Returns a subset of a given array, removing unwanted elements