@tonyhaofu/lotide

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 @tonyhaofu/lotide

Require it:

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

Call it:

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

Documentation

The following functions are currently implemented:

• assertArraysEqual(array1, array2): asserting that two arrays are the same (supports nesting)
• assertEqual(actual, expected): asserting that two parameters are equal (does not support objects or arrays) using ===
• assertObjectsEqual(object1, object2): asserting that two objects are equal (supports nesting)
• countLetters(str): counts occurence of letters in string
• countOnly(allItems, itemsToCount): given an array allItems, returns obj with key: value pairs representing elements in array and the number of times that element occurs in the array but only for elements that appear in array itemsToCount
• eqArrays(array1, array2): returns boolean of whether the 2 arrays are equal (supports nesting)
• eqObjects(object1, object2): returns boolean of whether 2 objects are equal (supports nesting)
• findKey(dict, callback): returns key value for the first property of dict object where callback returns true
• findKeyByValue(dict, value): returns key for the first property of dict where the value is equal to value
• flatten(arr): flattens a nested array
• head(arr): returns the first element of an array
• letterPositions(sentence): returns an object with keys equal to the letters of the string sentence and values equal to an array containing the indices at which those letters appear in sentence with the white-space removed
• map(array, callback): returns array with mapped values using callback function
• middle(arr): returns array containing the middle element(s) of array arr
• tail(arr): returns array containing the elements of array arr not including the first element
• takeUntil(array, callback): returns array of elements from array array until callback(element) returns true. Does not include that value
• without(source, itemsToRemove): returns array with elements from array source but with elements contained in array itemsToRemove removed.