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 @joepolo1/lotide

Require it:

const _ = require('@joepolo1/lotide');

Call it:

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

Documentation

The following functions are currently implemented:

• assertEqual("Orange", "Orange"): passes or fails assertation when run based on whether what is actually provided is exactly what is expected.
• assertArraysEqual(eqArrays([1, 2, 3], [1, 2, 3])): passes or fails assertation when run based on whether two provided arrays are exactly the same.
• assertObjectsEqual(eqObjects(ab, abc), true): passes or fails assertation when run based on whether the contents of two provided arrays are exactly the same.
• countLetters("Count these letters"): counts the number of each individual letter occurring in a provided string
• countOnly(firstNames, { "Jason": true, "Karima": true, "Fang": true, "Agouhanna": false }): returns true or false if the names or values provided are already in the object (in this case, firstNames has a list of names)
• eqArrays([1, 2, 3], [1, 2, 3]): returns true or false if two arrays match
• eqObjects(obj1, obj2): returns true or false if two obejcts match
• findKey({ "Blue Hill": { stars: 1 }, "Akaleri": { stars: 3 }, "noma": { stars: 2 }, "elBulli": { stars: 3 }, "Ora": { stars: 2 }, "Akelarre": { stars: 3 } }, x => x.stars === 2): returns the first key with a matching argument, in this case, Noma would be returned
• findKeyByValue(bestTVShowsByGenre, "The Wire"): finds the key of an object based on the value argument provided
• head([1, 2, 3]): returns the first element in an array (in this case, 1)
• letterPositions("Your sentence parameter goes here"): shows you the string index of each letter in a provided string argument. "Hello" returns the object { H: [ 0 ], e: [ 1 ], l: [ 2, 3 ], o: [ 4 ] }
• map(words, word => word[0]): returns an array of provided elements from an argued array, including only the letters provided in the second part of the argument parameters. for this example, words = ["ground", "control", "to", "major", "tom", "can", "you", "hear", "me"]; and this returns ['g', 'c', 't','m', 't','c','y', 'h', 'm'].
• middle([17, 22, 43, 54, 75, 1]): returns the middle element of an odd array or the middle two elements of an even numbered array
• tail([1, 2, 3]): provides every element in an array after the first (returns [2, 3])
• takeUntil(arr, x => x === "string!"): provides every element in an array as a new array, up until a stopping condition is met (in this example the stopping condition is the first time the word "string!" shows up in the provided array parameter argument).
• without(Source, itemsToRemove): removes an element from an array and returns the other elements