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 @curtis-wils0n/lotide

Require it:

const _ = require('@curtis-wils0n/lotide');

Call it:

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

Documentation

The following functions are currently implemented:

Array functions

head(array): Returns the first value of the provided array.

tail(array): Returns the provided array without its first value (its head).

middle(array): Returns the middle value of the provided array (both middle values if array's length is even).

countOnly(array, itemsToCount): Receives an array of values and an object containing search keys with true and false values. Returns an object with a count per how many true-valued keys were found in the array.

flatten(nestedArray): Returns a one-dimensional array from the provided array of nested values. Works with any level of nesting.

map(array, callback): Returns a mutation of the provided array based on the results of the provided callback function.

takeUntil(array, callback): Returns a copy of the provided array with values up until the condition set by the provided callback function is met.

without(array, itemsToRemove): Returns a copy of the provided array with items specified by itemsToRemove removed.

Object functions

findKey(object, callback): Returns a key from the provided object based on specifications of the callback function.

findKeyByValue(object, value): Returns a key from the provided object based on the provided value.

String functions

countLetters(string): Returns an object containing the number of times a character appeared in the provided string.

letterPositions(string): Returns an object containing the index of each character found in the provided string.

Equality checkers

eqArrays(array1, array2): Returns true or false based on strict equality of values in provided arrays. Works with any level of array nesting.

eqObjects(object1, object2): Return true or false based on strict equality of keys and values in provided objects. Works with any level of nesting.

Assertion functions

assertEqual(actual, expected): Returns true or false based on strict equality of primitive values provided and logs an assertion message to the console.

assertArraysEqual(actual, expected): Returns true or false based on strict equality of arrays provided and logs an assertion message to the console.

assertObjectsEqual(actual, expected): Returns true or false based on strict equality of objects provided and logs an assertion message to the console.

Updates

1.0.1

• Made flatten recursive to handle any level of array nesting.
• Developed more robust tests in the test/ directory.