@mgs31/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 @mgs31/lotide

Require it:

const _ = require('@mgs31/lotide');

Call it:

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

Documentation

The following functions are currently implemented:

• head(arr): Return the first element in an array.
• tail(arr): Return all BUT the first element in an array.
• middle(arr): Return an array with only the middle element(s).
• assertArraysEqual(actual, expected): Printing a series of sucess / failure messages to the console, detailing if two arrays are equal.
• assertEqual(actual, expected): Print a series of success / failure messages to the console, detailing behaviour of functions.
• eqArrays(actual, expected): Compare two arrays for a perfect match.
• eqObjects(object1, object2): Returns true if both objects have identical keys with identical values.
• assertObjectsEqual(actual, expected): Takes in two objects and log an appropriate message to the console.
• countLetters(word): Reviews a sentence (as a string) and then return a count of each of the letters in that sentence.
• countOnly(allItems, itemsToCount): Reviews a collection of items and return counts for a specific subset of those items.
• findKey(obj, fn): Takes in an object and a callback. Reviews the object and returns the first key for which the callback returns a truthy value.
• findKeyByValue(obj, val): Scan an object and return the first key which contains the given value.
• flatten(arr): Given an array with nested arrays it will return a single-level array.
• map(arr, callback): Reviews to arguments (and array and a callback function) which will return a new array based on the callback function.
• takeUntil(arr, fn): Return a slice of the array with elements taken from the beginning.
• without(arr, itemsToRemove): Removes specified value(s) from a desired array.
• letterPositions(word): Return all the indices (zero-based positions) in the string where each character is found.