@snehakm/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 @snehakm/lotide

Require it:

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

Call it:

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

Documentation

The following functions are currently implemented:

Mocha and Chai test framework used:

• head(array): Returns the first element of array.
• tail(array): Returns the array without its first element.
• middle(array): Returns the middle (qty 1 or 2) elements depending on the length of the array being odd or even. Returns an empty array if number of elements is less than 3.

Rest of the functions use assertion testing via locally implemented assert and eq functions in each file:

• assertArraysEqual(array1, array2): Asserts if the passed arrays, array1 and array2, are equal or not.
• assertEqual(val1, val2): Asserts if the primitive values passed, val1 and val2, are equal or not.
• assertObjectsEqual(object1, object2): Asserts if the objects passed, object1 and object2, are equal or not.
• countLetters(sentence): Returns a count of each letter in the the sentence (string) passsed.
• countOnly(array, object): Returns an object containing counts of everything that the input object listed as true, counted in the array passed.
• eqArrays(array1, array2): Returns true if array1 and array2 are equal.
• eqObjects(object1, object2): Returns true if object1 and object2 are equal.
• findKey(object, callback): Returns the key for the first value in object where the callBack function returns true.
• findKeyByValue(object, value): Returns the first key in object where the value matches the passed value.
• flatten(array): Returns the flat version of the array passed. Only one nested level implemented.
• letterPositions(sentence): Returns an array of 0 based indices of positions of each character in the sentence string where each character is found.
• map(array, callback): Returns a new array with the callback function applied to all elements within the input array.
• takeUntil(array, callback): Returns the array until the element for which the callback returns a true value.
• without(array1, array2 ): Returns an array of elements in array1 without the elements in array2.