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 @jonlanglois/lotide

Require it:

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

Call it:

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

Documentation

The following functions are currently implemented:

• eqArrays(array, array): Takes two arrays as arguments. Returns true if they are equivalent, and false otherwise.
• eqObjects(array, array): Takes two objects as arguments. Returns true if they are equivalent, and false otherwise.
• countLetters(sentence): Takes a string as argument. Returns an object showing the number of times each letter in sentence occurs in sentence.
• countOnly(items, itemsToCount): Takes two arrays as arguments. Returns an object listing the number of times each element of itemsToCount is in items.
• findKey(Object, callback): Takes an object and function as arguments. Returns the first key in object for which callback(value) will pass for that key's value.
• findKeyByValue(object, value): Takes an object for the first argument, and any second argument. Returns the first key in object which contains that value. If value is not in object, returns undefined.
• flatten(array): Takes an array as argument. Returns a flattened array.
• head(array): Takes an array as argument. Returns the first element of that array.
• letterPositions(string) Takes a string as argument. Returns an object containing the letters in string as keys, and an array of the positions of that letter in string as values.
• map(array, callback): Takes an array and function as arguments. Returns a new array, where the element at index i is the result of calling callback on array[i].
• middle(array): Takes an array as argument. Returns a new array of the middle element(s) of array.
• tail(array): Takes an array as argument. Returns an array of all elements of array excluding the first.
• takeUntil(array, callback): Takes an array and function as arguments. Returns an array of the first n elements of array that return a falsy value when used as arguments in callback.
• without(items, toExclude): Takes two arrays as arguments. Returns an array of all elements of items which are not elements of toExclude.