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 @rlitoncs/lotide

Require it:

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

Call it:

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

Documentation

The following functions are currently implemented:

• assertArraysEqual(arr1, arr2): takes in 2 arrays and checks whether the 2 arrays are matching. If it is, the arrays are outputted along with an assertion message displaying if it has passed or failed
• assertEqual(actual, expected): expects two arguments and returns a passed assertion or a failed assertion, depending on whether the two arguments strictly match
• assertObjectsEqual(object1, object2): takes in 2 objects and checks to see if the objects are equal. If it is, the objects are outputted along with an assertion message displaying a if it passed or failed
• countLetters(string): takes in a string and counts the number of occurences of each letter in the string. Returns a object back with the occurences of each letter in the string
• countOnly(allItems, itemsToCount): takes in an array of items and a itemsToCount object. The array counts only the items that need to be counted for in itemsToCount object, then returns a new object with the selected items and it's associated count value
• eqArrays(arr1, arr2): takes in 2 arrays and checks that the elements of both arrays are identical in value and position. Returns true if both arrays are identical, otherwise false
• eqObjects(object1, object2): takes in 2 objects and checks to see if the both objects have identical keys and values. Returns true if both objects are identical, otherwise false
• findKey(object, callbackF): takes in an object and a callback function and returns the key that is true according to the callback function
• findKeyByValue(object, value): takes in an object, and a target value, and returns the first key that matches the target value
• flatten(arr): will take in an array containing elements including nested arrays of elements, and return a "flattened" version of the array
• head(arr): takes in an array and returns the first element of the array
• tail(arr): takes in an array and returns the rest of the array without the first element
• letterPositions(string): takes in a string and returns an object of all the indexes of where each letter occurs in the sentence
• map(arr): takes in an array and a callback function. Returns a new array with the new content as applied from the callback function.
• middle(arr): will take in an array and returns an array of the middle-most element(s) of the given array
• takeUntil(arr, callbackF): takes in an array and a callback function and returns a new array with content, up until it satifies the callback function condition
• without(sourceArr, itemsToRemove): takes 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