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 @swathijayasree/lotide

Require it:

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

Call it:

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

Documentation

The following functions are currently implemented:

• assertArraysEqual: Asserts whether two arrays are equal

• assertEqual: Asserts whether two primitive values are equal.

• asserObjectEqual: Asserts whether two objects are equal.

• countLetters: Returns an object where each unique character encountered in a given string is a key and the value for that property should be the number of occurrences for that character.

• countOnly: Given an array and an object, it will return an object containing counts of everything that the input object listed and was contained in the array as well.

• eqArrays: Compares the data of two arrays to check if they are equal to each other.

• eqObjects: Compares the data of two objects to check if they are equal to each other.

• findKey: Takes an object and a callback and return the first key for which the callback returns a truthy value. If no key is found, then it should return undefined.

• findKeyByValue: Takes an object and a value and returns the first key which contains the given value. If no key with that given value is found, it returns undefined.

• flatten: Given an array containing other nested arrays, it flattens it into a single-level array.

• head: Returns the first item in the array.

• letterPositions: Returns an object containing each characters as keys and as values all the indices in the string where each character is found.

• map: Returns a new array based on the results of the callback function.

• middle: Returns an array with only the middle element(s) of the provided array, a single middle element for odd arrays and two middle elements for even arrays.

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

• takeUntil: Returns a "slice of the array with elements taken from the beginning." It should keep going until the callback returns a truthy value.

• without: Takes an array and an itemsToRemove array. It should return a new array with only the elements from source that are not present in the itemsToRemove array.