@tangivan/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 @tangivan/lotide

Require it:

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

Call it:

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

Documentation

The following functions are currently implemented:

• tail(arr): Take in an array and return the
• middle(arr): Take in an array and return the middle-most element(s) of the given array.
• flatten(arr): Take in an array containing elements including nested arrays of elements, and return a "flattened" version of the array.
• map(array, callback)): Takes in an array and callback function. Returns a new array with the results of the callback function.
• takeUntil(array, callback): Takes in an array and callback function. Returns a slice of the array up to the first truthy value returned from callback
• without(source, itemsToRemove): Takes in a source array and an itemsToRemove array. Returns an array without items from itemsToRemove and only the leftover items in source.
• assertArraysEqual(actual, expected): Assertion function for arrays which takes in the actual array and an expected array. Return assertion messages in the console on whether they passed or failed the test.
• assertEqual(expected, actual): Assertion function for primitive data types which takes in the actual value and an expected value. Return assertion messages in the console on whether they passed or failed the test.
• assertObjectsEqual(actual, expected): Assertion function for objects which takes in the actual object and an expected object. Return assertion messages in the console on whether they passed or failed the test.
• countLetters(string): Take in a string and return an object with the individual characters as the key and the count of said characters as the value.
• countOnly(allItems, itemsToCount): Take in an array of items allItems and return a count of itemsToCount only.
• eqArrays(arr1, arr2): Take in 2 arrays and return true if their contents are equal, or false if their contents are not equal.
• eqObjects(obj1, obj2): Take in 2 objects and return true if their contents are equal, or false if their contents are not equal.
• findKey(obj, callback): Takes in an object and a callback. Returns the first key for which the callback returns a truthy value. If no key is found, then it should return undefined
• findKeyByValue(obj, val): Takes in an object obj and a value val and returns the key of the input object which holds the input value.
• letterPositions(string): take in a string string which will return all the indices (zero-based positions) in the string where each character is found.