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 @username/lotide

Require it:

const _ = require('@neerav-dev/lotide');

Call it:

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

Documentation

The following functions are currently implemented:

• head(...): function for arrays is to retrieve the first element from the array.
• tail(...): function for arrays is to retrieve every element except the head (first element) of the array.
• middle(...): function for arrays is to retrieve the middle-most element(s) of the given array.
  • For arrays with one or two elements, there is no middle so will return an empty array.
  • For arrays with odd number of elements, an array containing a single middle element will be returned.
  • For arrays with an even number of elements, an array containing the two elements in the middle will be returned.
• flatten(...): function will take in an array containing elements including nested arrays of elements, and return a "flattened" version of the array.
• countOnly(...): function will be given an array and an object. It will return an object containing counts of everything that the input object listed.
• letterPositions(...): function will return all the indices (zero-based positions) in the string where each character is found.
• findKeyByValue(...): function takes in an object and a value. It will scan the object and return the first key which contains the given value. If no key with that given value is found, then it will return undefined
• eqObjects(...): function will take in two objects and returns true or false, based on a perfect match
• eqArrays(...): function will takes in two arrays and returns true or false, based on a perfect match.
• without(...): function will take an array and will return a subset of a given array, removing unwanted elements.
• countLetters(...):function will take in a sentence (as a string) and then return a count of each of the letters in that sentence.
• map(...): function take in two arguments, an array and a callback function will return a new array based on the results of the callback function.
• takeUntil(...):function will take in two arguments, an array and a callback function, and will return a "slice of the array with elements taken from the beginning." It should keep going until the callback/predicate returns a truthy value.
• findKey(...): function will takes in an object and a callback. It will scan the object and return the first key for which the callback returns a truthy value. If no key is found, then it should return undefined.