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 @stas74/lotide

Require it:

const _ = require('@stas74/lotide');

Call it:

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

Documentation

The following functions are currently implemented:

• head(array): retrieve the first element from the array
• tail(array): retrieve every element except the head (first element) of the array
• middle(array): take in an array and return the middle-most element(s) of the given array
• assertArraysEqual(array, array): writes an error message to the console if the assertion
• assertEqual(actual, expected): console.log an appropriate message to the console.
• assertObjectsEqual(object, object): take in two objects and console.log 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(string): take in a string and return counts for a specific subset of those items
• eqArrays(array, array): compare two arrays for a perfect match
• eqObjects(object, object): take in two objects and returns true or false, based on a perfect match
• findKey(object, callback): takes in an object and a callback. 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):search for a key on an object where its value matches a given value
• letterPositions(string): return all the indices (zero-based positions) in the string where each character is found.
• map(array, callback): The map function will return a new array based on the results of the callback function
• reverse(string): reversing string
• takeUntil(array, callback): the callback should only be provided one value: The item in the array
• without(array, array): take in a source array and a itemsToRemove array. It should return a new array with only those elements from source that are not present in the itemsToRemove array.