@victoriamlee/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 @victoriamlee/lotide

Require it:

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

Call it:

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

Documentation

The following functions are currently implemented:

• head(arr): Retrieve the first element from the array
• tail(arr): Retrieves every element except the head (first element) of the array
• middle(arr): Returns the middle-most element(s) of the given array
• assertArraysEqual(actual, expected): Compares two arrays and prints an appropraite message to the console
• assertEqual(actual, expected): Compares two values and prints whether or not an expected output meets the actual
• assertObjectsEqual(actual, expected): Takes in two objects and prints whether or not an expected output meets the actual
• countLetters(string): Take in a sentence (as a string) and return a count of each of the letters in that sentence
• countOnly(allItems, itemsToCount): Take in a collection of items and return counts for a specific subset of those items
• eqArrays(array1, array2): Compares two arrays and returns true or false, based on a perfect match
• eqObjects(object1, object2): Takes in two objects and returns true or false, based on a perfect match
• findKey(object, callback): Scans the object and returns the first key for which the callback returns a truthy value (if not key is found, then it should return undefined)
• findKeyByValue(object, value): Scan the object and return the first key which contains the given value (if no key with that given value is found, it returns undefined)
• letterPositions(string): Return all the indices (zero-based positions) in the string where each character is found
• map(array, callback): Return a new array based on the results of the callback function
• takeUntil(array, callback): Returns a "slice of the array with elements taken from the beginning", it will keep going back until the callback returns a truthy value
• without(source, itemsToRemove): Returns a subset of a given array, removing unwanted elements