@mitchwaldrich/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 @mitchwaldrich/lotide

Require it:

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

Call it:

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

Documentation

The following functions are currently implemented:

• head(arr): returns the first value of an array.
• middle(arr): returns the middle value(s) of an array.
• tail(arr): returns an array of all values after the first value.
• assertArraysEqual(actual, expected): asserts the equality of a returned array against its predicted output.
• assertEqual(actual, expected): asserts the equality of a returned value against its predicted value.
• assertObjectsEqual(actual, expected): asserts the equality of a returned object against its predicted object.
• countLetters(string): takes in a string and returns key value pairs of how many times each character appears.
• countOnly(array, object): takes in an array and returns an object of only the prescribed values.
• eqArrays(arr1, arr2): compares the equality of two arrays.
• eqObjects(obj1, obj2): compares the equality of two objects.
• findKey(object, callback): takes in an objects and performs the callback function, returning the first truthy value found in the object.
• findKeyByValue(object, value): takes in an object and returns the first key found for a given value.
• letterPositions(string): takes in a string and returns an object of key value pairs of each character and its position in the string.
• map(array, callback): performs a given callback on an array to return the resulting array.
• takeUntil(array, callback): returns a slice of an array until the truthiness of a given callback is produced.
• without(arr1, arr2): takes in a source array and a second array of items to remove, then returns a new array of only desired items.