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 @anastasiia.ua/lotide

Require it:

const _ = require('@anastasiia.ua/lotide');

Call it:

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

Documentation

The following functions are currently implemented:

• function1(head): returns first element of the array
• function2(tail): returns every element except the head (first element) of the array
• function3(middle): takes in an array and returns the middle-most element(s) of the given array
• function4(countLetters): takes a sentence as input and counts the occurrences of each letter in the sentence
• function5(countOnly): The function reports back how many instances of each string were found in the array of strings
• function6(findKey): takes in an object and a callback. It scans the object and return the first key for which the callback returns a truthy value. If no key is found, then it returns undefined
• function7(findKeyByValue): takes in an object and a value. It scans the object and returns the first key which contains the given value. If no key with that given value is found, then it returns undefined
• function8(flatten): takes in an array containing elements including nested arrays of elements, and returns a "flattened" version of the array
• function9(letterPositions): For each letter in the string, returns an array of multiple numbers to represent all the places in the string that letter shows up.
• function10(map): takes in two arguments: an array to map and a callback function. The map function returns a new array based on the results of the callback function
• function11(takeUntil): takes in two parameters: the array to work wit and a callback. The function returns a "slice of the array with elements taken from the beginning. It will keep going until the callback returns a truthy value. The callback should only be provided one value: The item in the array.
• function12(without): returns a subset of a given array, removing unwanted elements
• function13(assertArraysEqual): takes in two arrays and console.log an appropriate message to the console
• function14(assertEqual): its used for asserting equality between two values. It compares the actual value with the expected value
• function15(eqArrays): takes in two arrays and returns true or false, based on a perfect match
• function16(assertObjectsEqual): compares whole objects as values *function16(eqObjects): returns true if both objects have identical keys with identical values