@tomas.wen/lotide

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 @tomas.wen/lotide

Require it:

const _ = require('@tomas.wen/lotide');

Call it:

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

Documentation

The following functions are currently implemented:

• head() : returns the first element of an array.
• tail() : returns an array with the first element removed.
• middle() : returns the middle element of an array
• assertArraysEqual(array1,array2) : asserts two arrays
• assertEqual(ele1,ele2) : asserts two elements
• assertObjectsEqual(obj1,obj2) : asserts two objects
• countLetters(input) : returns the number of times each letter appears in the input
• countOnly(allItems,itemsToCount) : return all the indices (zero-based positions) in the allItems where each itemToCount is found.
• eqArrays(arr1,arr2) : compares two arrays and returns truthy or falsy.
• eqObjects(arr1,arr2) : compares two objects and returns truthy or falsy.
• findKey(obj,callback) : find keys using callback function
• findKeyByValue(obj, value) : search for a key on an object where its value matches a given value.
• flatten(arr) : Given an array with other arrays inside, it can flatten it into a single-level array.
• letterPositions(string) : creates an object indicating the indeces where each letter is present in the string.
• map(arr, callback) :creates a new array populated with the results of calling a provided function on every element in the calling array.
• takeUntil(arr, callback) : creates an array with the elements removed based on callback function
• without(arr, itemsToRemove) : take in a source array and a itemsToRemove array. It should return a new array with only those elements from source that are not present in the itemsToRemove array.