@mitalik/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 @mitalik/lotide

Require it:

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

Call it:

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

Documentation

The following functions are currently implemented:

• head(array): returns the head of an array.
• tail(array): returns the tail of an array.
• middle(array): returns the middle element(s) of an array.
• assertArraysEqual(actual array, expected array): test for array equality between actual and expected parameters.
• assertEqual(actual, expected): test for equality between actual and expected parameters (for primitive value).
• assertObjectsEqual(actual, expected): test for object equality between actual and expected parameters.
• countLetters(inputString): count number of occurances for each letter in a given inputString.
• countOnly(stringArray, ObjectSpecifyingWhatToCount): return counts object for a specific subset of those items.
• eqArrays(array1, array2): returns true or false based on the equality between two arrays.
• eqObjects(object1, object2): returns true or false based on the equality between two objects.
• findKey(object, callbackFunction): returns the first key in object for which the callback returns a truthy value, if not then return undefined.
• findKeyByValue(object, value): return the first key in object which contains the given value.
• flatten(array): returns a flattened version of the given nested array (only handle one level of nesting).
• letterPositions(string): returns an object of all the indices (zero-based positions) in the string where each character is found.
• map(array, callback): returns a new array based on the results of the callback function.
• takeUntil(array, callback): returns a slice of the array with elements taken from the beginning until the callbacks returns a truthy value.
• without(sourceArray, itemsToRemove): returns a subset of a given array, removing unwanted elements.