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 @simarpreetsidhu27/lotide

Require it:

const _ = require('@simarpreetsidhu27/lotide');

Call it:

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

Documentation

The following functions are currently implemented:

• assertArraysEqual: Compares two arrays and logs a message indicating whether they are equal.

• assertEqual: Compares two primitive values and logs a message indicating whether they are equal.

• assertObjectsEqual: Compares two objects and logs a message indicating whether they are equal.

• countLetters: Takes a string and returns an object mapping each letter to its frequency in the string.

• countOnly: Counts the occurrences of specified elements in an array and returns an object with the counts.

• eqArrays: Determines if two arrays are equal by comparing their elements.

• eqObjects: Determines if two objects are equal by comparing their keys and values.

• findKey: Returns the first key in an object for which the provided callback function returns a truthy value.

• findKeyByValue: Returns the first key in an object that corresponds to a given value.

• flatten: Flattens a nested array into a single-level array.

• head: Returns the first element of an array.

• letterPositions: Returns an object mapping each letter in a string to an array of its index positions.

• map: Applies a callback function to each element in an array and returns a new array with the results.

• middle: Returns the middle element(s) of an array. If the array has one or two elements, it returns an empty array.

  • For arrays with an odd number of elements, it returns a single-element array containing the middle element.

  • For arrays with an even number of elements, it returns an array containing the two middle elements.

• tail: Returns all elements of an array except the first one.

• takeUntil: Returns a slice of the array containing elements from the start until the callback returns a truthy value.

• without: Returns a new array excluding specified elements from the original array.

• map(array, callback): Returns a new array based on the results of the callback function