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 @thilakshan.arulnesan/lotide

Require it:

const _ = require('@thilakshan.arulnesan/lotide');

Call it:

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

Documentation

The following functions are currently implemented:

• head(array): Given an array, will return the first element.
• tail(...): Given an array, will return an array containing everything except the first element.
• eqArrays(...): Checks if two arrays are equal and returns a boolean.
• assertArraysEqual(...): Checks if two arrays are equivalent and prints out to a log of the test.
• middle(...): Returns the middle element (if there are an even number of elements, the middle two elements are returned instead).
• assertEqual(...): Checks if two elements are equal
• countLetters(...): Given a string, returns an object with every letter in the string as a key and the values as the number of time that letter occurs.
• countOnly(...): Given an array and an object indicating which strings to look for (keys = string, values = true/false), this function will return an object containing indicating how many times the string appears in the array.
• eqObjects(...): Checks if two objects are equivalent (same keys and values) and returns a boolean.
• assertObjectsEqual(...): Prints out whether two arrays are equal or not
• findKey(...): Given an object and a function will return all the keys that satisfy the function.
• findKeyByValue(...): Given an object and a value, returns the first key in the object that has the given value.
• flatten(...): Given an array that contains sub-arrays, returns an array containing a single array containing no subarrays but contains all the original elements.
• letterPositions(...): Given as string, returns an object which has all the letters as keys and the value is an array of all the indexes where the letter appears.
• map(...): Given an array and a function, map will return an array where the callback is applied to each element.
• takeUntil(...): Given an array and a function, returns all elements from index 0 until the first element which causes the function to return false.
• without(...): Given two arrays, array1 and array2, will return the subset of elements in array1 that are NOT in array2 (this is returned as an array).