@dantan380/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 @dantan380/lotide

Require it:

const _ = require('@dantan380/lotide');

Call it:

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

Documentation

The following functions are currently implemented:

• assertArraysEqual(array1, array2): Checks if two arrays have the same length, type and value. Returns a message indicating whether they are equal or not.

• assertEqual(actual, expected): Checks if actual is equal to expected, in both type and value. Returns a message indicating whether they are equal or not.

• assertObjectsEqual(actual, expected): Checks if actual is the same object as expected. Returns a message indicating whether they are equal or not.

• countLetters(sentecne): Gives a count of how many of each letter appears in the sentence.

• countOnly(allItems, itemsToCount): Counts how many times a specific element appears in an array based on a given object. Returns an object with the number counted of each specific item.

• findKey(object, callback): Retrieves the key of a value in an object based on the callback function. Returns the first key that causes the callback function to return a truthy value. If no key meets the requirement, returns undefined.

• findKeyByValue(object, callback): Takes an object and a callback function as parameters. Retrieves the first key in the object that meets the value specified. Returns undefined if no such key is found.

• head(array): Takes an array. Returns the first element of that array (index 0).

• letterPositions(sentence): Finds the indices of each letter in the sentence and returns them in an object, where each key is each letter of the sentence. The value of each key is it's index in the sentence.

• map(array, callback): Takes an array and a callback function as parameters. Transforms the elements of the given array based on the callback function. Returns a new array with each transformed element.

• middle(array): Finds and returns the middle most element of an array. If the given array's length is even, the two middle most values are returned in a new array.

• takeUntil(array, callback): Takes an array and a callback function as parameters. Returns a new array with elements until the callback function produces a truthy value.

• tail(array): Returns a new array without the first value of the given array. Takes an array as a parameter.

• without(source, itemsToRemove): Returns a new array with the specified elements removed from the source array.