@janaym/lotide v1.0.0

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 @janaym/lotide

Require it:

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

Call it:

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

Documentation

The following functions are currently implemented:

• assertEqual(): compares two items (not arrays or objects), asserts whether they are strictly equal, and console logs the result.
• assertArraysEqual(): compares two arrays, asserts whether each of their respective entries are strictly equal, and console logs the result.
• assertObjectsEqual(): compares two objects, and asserts whether they have equal keys and that each key's respective values are strictly equal to each other. Console logs the result.
• countLetters(): Takes a string and returns a object containing a count of each character in the string, not including the space character.
• countOnly(): Takes in an array and an object. Returns an object containing a count of each item listed by the object, in the array.
• eqArrays(): Takes in two arrays and returns true if their items are strictly equal and ordered equally. Returns false otherwise. *eqObjects(): Takes in two objects and returns true if they contain the same key: values pairs.
• findKey(): Takes an object and a callback. Scans the object and returns the first key for which the callback function returns a truthy value. Returns undefined if no such key is found.
• findKeyByValue(): Takes an object an a value. Returns the first key in a given object whose value is the input value.
• flatten(): Takes in an array that may contain other nested arrays. Returns a single level array containing every element contained in the input array, and any of its n-level nested arrays.
• head(): returns the first element of a given array
• letterPositions(): Takes in a string and returns an object containing the position(s) at which each character of the string occur.
• middle(): returns an array containing the middle element(s) of a given array. If the input array's length is even, the return array contains the middle two elements. If its length is odd, the return array contains the singular middle element.
• map(): Takes an array and a callback function. Returns a new array whose items are the result of the callback function.
• middle(): returns an array containing the middle element(s) of a given array. If the input array's length is even, the return array contains the middle two elements. If its length is odd, the return array contains the singular middle element.
• tail(): returns an array that is all the elements except the first of a given array. Returns [] if the given array is empty or has only one element. *takeUntil(): Takes an array and a callback function. Removes elements from the front of the array until the callback fucntion acting on the array items evaluates to true.
• without(): Takes a source array and an items to remove array. Returns a new array containing only the source array elements that are not in the to remove array.