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 @aidanantony/lotide

Require it:

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

Call it:

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

Documentation

The following functions are currently implemented:

• function1(head): This function returns the first element in an array.
• function2(tail): This function returns everything but the first element in an array.
• function3(middle): This function returns the middle most element in an array. Returns one element for odd numbered arrays and two middle elements for even numbered arrays.
• function4(flatten): This function returns a flattened array after being given an array with nested arrays.
• function5(map): This function takes in a callback function and an array. It returns a new array that has values that have been changed by the callback function.
• function6(without): This function takes in two arrays. It returns an array that only contains values that are present in the first array but are not present in the second array.
• function7(eqArrays): This function takes in two arrays and checks whether or not they are equal and returns a boolean. True if they are equal and false if they are not equal.
• function8(assertEqual): This function takes in two values and checks whether they are equal. Returns the boolean true if they are equal and returns false if they are not equal.
• function9(assertArraysEqual): This function checks if two arrays are equal and will console.log a message indicating whether or not they are equal or not.
• function10(eqObjects): This function checks whether or not two objects are equal.
• function11(assertObjectsEqual): This function checks whether two objects are equal and will console.log a message to indicate whether or not it is.
• function12(countLetters): This function takes in a sentence and returns an object that shows the letters as keys and the values of the keys as the number of times that the letter appeared in the sentence.
• function13(countOnly): The function will take in two parameters. One that is a set of items, the second parameter will be which of those items to count. It will then return just the items specified to count.
• function14(findKeyByValue): The function takes in an object parameter and a value and then returns the key that corresponds to that value in the object.
• function15(findKey): The function takes in a callback and and object. It returns the first key where the callback function evaluates to true.
• function16(letterPositions): The function returns all the index numbers of the letters in a string.
• function17(takeUntil): The function takes in an array and a callback function as parameters. It then returns a sliced array to us. The slice is based on the value returned by the callback function.