@kimjon0509/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 @kimjon0509/lotide

Require it:

const _ = require('@kimjon0509/lotide');

Call it:

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

Documentation

The following functions are currently implemented:

• assertArraysEqual(actual,expected): takes in two arrays and prints an appropriate message to the console.
• assertEqual(actual, expected): prints to the console for us, the developer, when an expected outcome is not met (fails)
• assertObjectsEqual(actual, expected): take in two objects and prints an appropriate message to the console.
• countLetters(string): take in a sentence (as a string) and then return a count of each of the letters in that sentence.
• countOnly(allItems, itemsToCount): return a proper report on all the strings found in the input array, and their respective counts.
• eqArrays(firstArray, secondArray): takes in two arrays and returns true or false, based on a perfect match.
• eqObjects(object1, object2): take in two objects and returns true or false, based on a perfect match.
• findKey(itemObj, callback): 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(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.
• flatten(arrayOfValues): takes in an array containing elements including nested arrays of elements, and return a "flattened" version of the array.
• head(array): returns the first item in the array.
• letterPositions(sentence): 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.
• tail(array): returns the "tail" of an array: everything except for the first item (head) of the provided array.
• takeUntil(array, callback): will keep collecting items from a provided array until the callback provided returns a truthy value.
• without(source, itemsToRemove): return a subset of a given array, removing unwanted elements.