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 @tronross/lotide
Require it:
const _ = require('@tronross/lotide');
Call it:
const results = _.tail([1, 2, 3]) // => [2, 3]
Documentation
The following functions are currently implemented:
-
assertArraysEqual(arrayOne, arrayTwo)
: compares two arrays and prints a message to the console asserting whether they are strictly equal or not. -
assertEqual(actual, expected)
: compares two values and prints a message to the console asserting whether they are strictly equal or not. -
assertObjectsEqual(actual, expected)
: compares two objects and prints a message to the console asserting whether they are strictly equal or not. -
countLetters(sentence)
: takes in a string and returns an object containing counts of each letter that appears in the string. -
countOnly(allItems, itemsToCount)
: takes in an array of strings and an object specifying what strings to count, and returns an object containing those strings and their count. -
eqArrays(arrayOne, arrayTwo)
: checks if two input arrays are identical, element by element. -
eqObjects(object1, object2)
: checks if two input objects are identical, and returns true if they are. -
findKey(object, callback)
: takes in an object and a callback, scans the object and returns the first key for which the callback returns a truthy value. -
findKeyByValue(objToSearch, searchValue)
: takes in an object and a value, scans the object and returns the first key which contains the given value. -
flatten(array)
: takes an array with other arrays inside (one level of arrays only), and flattens it into a single-level array. -
head(array)
: returns the head of an array, and returns undefined in the event of an empty array. -
letterPositions(sentence)
: takes in a string and returns an object with properties (arrays) that correspond to the individual letters and their indices in the input string. -
map(array, callback)
: takes an array and a callback function as arguments, and returns a new array corresponding to the results of the callback function. -
middle(array)
: returns an array containing the middle element(s) of an input array. If the input array contains two or fewer elements, middle returns an empty array. -
tail(array)
: returns a shallow copy of the tail of the input array, leaving the input array unchanged. -
takeUntil(array, callback)
: takes in an array and a callback function and returns a slice of the array with elements taken from the beginning until the callback identifies the stopping point. -
without(source, itemsToRemove)
: takes a source array and an array of elements to remove, and returns a shallow copy of the array with the elements removed.