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 @isaiahiu/lotide

Require it:

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

Call it:

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

Documentation

The following functions are currently implemented:

• head(array): returns the first element in an array

• tail(array): returns the "tail" of an array: everything except for the first item (head) of the provided array.

• middle(array): takes in an array and returns the middle-most element(s) of the given array.

• flatten(array): take in an array containing elements including nested arrays of elements, and return a "flattened" version of the array.

• countOnly(allItems, itemsToCount): takes in an array and an object. Returns an object containing counts of everything that the input object listed.

• letterPositions(string): returns all the indices (zero-based positions) in the string where each character is found.

• findKeyByValue(object, value): takes in an object and a value. Returns the first key which contains the given value. If no key with that given value is found, then it returns undefined.

• eqObjects(object1, object2 ): takes in two objects and returns true or false, based on a perfect match.

• eqArrays(array1, array2): takes in two arrays and returns true or false, based on a perfect match.

• countLetters(string): takes in a sentence (as a string) and then returns a count of each of the letters in that sentence.

• findKey(obj, cb): return the first key for which the callback returns a truthy value. If no key found returns undefined.

• map(arr, cb): return a new array based on the results of the callback function.

• takeUntil(array, callback): returns a "slice of the array with elements taken from the beginning until callback returns truthy.

• without(sourceArr, itemsToRemove): returns a subset of a given array, removing unwanted elements