@albertho/lotide v1.0.3

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 @albertho/lotide

Require it:

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

Call it:

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

Documentation

The following functions are currently implemented:

• countLetters(str): returns a new object of all letters of a string and the number of times it appears in the string
• countOnly(str, obj): returns a new object of only the letters of a string found in the second argument and the number of times it appears in the string
• eqArrays(arr1, arr2): returns true if 2 arrays have the same values; else, returns false
• eqObjects(obj1, obj2): returns true if 2 objects have the same values; else, returns false
• findKey(obj, callback): returns the first key found that passes a callback function (passed in as the second argument)
• findKeyByValue(object, value): returns the first key found that matches a given value
• flatten(arr): returns a new array with all sub-array elements concatenated recursively
• head(arr): returns the first element of an array
• letterPositions(str): returns a new object with a key for each unique letter of a string, each with its value as an array of the letter's index position(s)
• map(arr, callback): returns a new array of elements that pass the callback function (passed in as the second argument)
• middle(arr): returns the middle element of an odd-length array, or the middle two elements of an even-length array
• tail(arr): returns a new array consisting of the the tail of the original array
• takeUntil(arr, callback): returns a new array of all of the elements of the original array up until a stopping condition, dictated by a callback function (passed in as the second argument)
• without(arr1, arr2): returns a new array of all of the elements in the first array not included in the second array

Some additional assertion functions:

• assertArraysEqual(arr1, arr2): returns a console.log message comparing two arrays
• assertEqual(val1, val2): returns a console.log message comparing two values
• assertObjectsEqual(obj1, obj2): returns a console.log message comparing two objects