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 @tzheng/lotide

Require it:

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

Call it:

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

Documentation

The following functions are currently implemented:

• assertArraysEqual(arr1, arr2): assertion function to check if two arrays are equal
• assertEqual(actual, expected): assertion function to check if two primitives are equal
• assertObjectsEqual(actual, expected): assertion function to check if two objects are equal
• countLetters(string): returns a count of the number of letters in input
• countOnly(allItems, itemsToCount): maps a count of each unique element of itemsToCount in allItems
• eqArrays(arr1, arr2): checks if two arrays are equal (deep check to be implemented)
• eqObjects(actual, expected): deep checks if two objects are equal
• findKey(object, callback): returns the key of the first object with key in object else returns undefined
• findKeyByValue(object, value): returns the key of the first object with value in object else returns undefined
• flatten(arr): returns a 1-dimentional array of flattened n-dimentional arrays of elements
• head(arr): returns the first element in an array
• letterPositions(sentence): returns a map of letters (key) and array of positions that letter appears in sentence (value)
• map(array, callback): returns a new array whose elements consist of each element of the original array after callback function
• middle(array): returns an array of the middle element(s) in an array
• tail(arr): returns an array of all the elements after the first element in arr
• takeUntil(array, callback): returns an array of values from original array that until the first element that evaluates to false from the callback
• without(source, itemsToRemove): returns a new array consisting of all elements in source without elements in itemsToRemove