@hasnaa-messaoudi/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 @hasnaa-messaoudi/lotide

Require it:

const _ = require('@hasnaa-messaoudi/lotide');

Call it:

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

Documentation

The following functions are currently implemented:

• assertEqual(actual, expected): the function compare the two values it takes in and print out a message telling us if they match or not.
• head(array): returns the first item in the array.
• tail(array): returns the "tail" of an array: everything except for the first item (head) of the provided array.
• eqArrays(array1, array2): takes in two arrays and returns true or false, based on a perfect match.
• assertArraysEqual(array1, array2): takes in two arrays and console.log an appropriate message to the console.
• without(array1, array2): returns a subset of a given array, removing unwanted elements.
• middle(array1): takes in an array and return the middle-most element(s) of the given array.
• countOnly(array, object): will be given an array and an object. It will return an object containing counts of everything that the input object listed.
• countLetters(string): should take in a sentence (as a string) and then return a count of each of the letters in that sentence.
• letterPositions(string): return all the indices (zero-based positions) in the string where each character is found.
• findKeyByValue(object, value): 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.
• eqObjects(object, value): takes in two objects and returns true or false, based on a perfect match.
• assertObjectsEqual(object1, object2): takes in two objects and console.log an appropriate message to the console.
• map(array, callback): takes in two arguments (An array to map, A callback function). The map function will return a new array based on the results of the callback function.
• takeUntil(array, callback): keeps collecting items from a provided array until the callback provided returns a truthy value.
• findKey(array, callback): takes in an object and a callback. It scans 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.