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 @jonaskunz/lotide

Require it:

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

Call it:

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

Documentation

The following functions are currently implemented:

• assertArraysEqual: asserts if two arrays are identical. Ex: assertArraysEqual([1],[1]) => true
• assertEqual: asserts true if two primitive values are equal. Ex: assertEqual(1,1) => true
• assertObjectsEqual: asserts true if two objects are identical. Ex: assertObjectsEqual({1: 2},{1: 2}) => true
• countLetters: counts the frequency a given letter appears in a string. Ex: countLetters("Hello") => {H: 1, e: 1, l: 2, o: 1}
• countOnly: counts only words/letters included in count Items. Ex: countOnly(["hello","Goodbye"], "hello) => {"hello": 1}
• eqArrays: checks if two arrays are equal and returns true if so. Ex: eqArrays([1],[1]) => true
• eqObjects: returns true if two objects are equal. Ex: eqObjects({1},{1}) => true
• findKeyByVlaue: finds the first key with a given value. Ex: findKeyByValue({1: "a", 2: "a"}, "a") => 1
• findKey: Finds key for specified value Ex: findKey({1: "a", 2: "b"}, x => x === "a") => 1
• head: Returns first element of an array. Ex head([1,2,3]) => 1
• letterPosition: Returns Object displaying the index of letters. Ex: letterPosition("Hello") => {H: [0], e: [1], l: [2,3], o: [4]}
• map: Performs specified transformation on input array. Ex: map([1,2,3,4], x => x * 2) => [1,4,6,8]
• middle: Returns middle element of an array if odd and middle two if even, returns empty array for single or no element. Ex: middle([1,2,3]) => [2]
• tail: Returns all elements but the first of an array. Ex: tail([1,2,3]) => [2,3]
• takeUntil: Returns elements from an array until a specified value. Ex: takeUntil([1,2,3,4], x => x === 3) => [1,2,3]
• without: Returns array without specified elements. EX: without([1,2,3,4,5,6,7], [4,5,6,7]) => [1,2,3]