A mini clone of the Lodash library.
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.
Install it:
npm install @dlinardi/lotide
Require it:
const _ = require('@dlinardi/lotide');
Call it:
const results = _.tail([1, 2, 3]) // => [2, 3]
The following functions are currently implemented:
-
head(array)
:- returns the first element of the
array
.
- returns the first element of the
-
tail(array)
:- returns everything but the first element of
array
.
- returns everything but the first element of
-
middle(array)
:- returns the middle most element(s) of the given
array
.
- returns the middle most element(s) of the given
-
flatten(array)
:- returns a single level array from the
array
passed through containing nested arrays.
- returns a single level array from the
-
findKey(object, callback)
:- returns the first key for which the
callback
returns a truthy value or if no key is found returns undefined.
- returns the first key for which the
-
findKeyByValue(object, value)
:- returns the first key which contains the given
value
, if no key is found, returns undefined.
- returns the first key which contains the given
-
letterPositions(string)
:- returns 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 piece of the array with elements taken from the beginning, keeps going until the callback returns a truthy value.
-
without(sourceArray, itemsToRemoveArray)
:- returns a subset of a given array (sourceArray), removes unwanted elements (itemsToRemoveArray).
-
countLetters(string)
:- returns an object with each key representing each character from the string, and the value being the amount of times that character exists in the string.
-
countOnly(array, object)
:- returns an object that represents how many times each string is found in the input array.
-
eqArrays(array1, array2)
:- returns true or false, based on a perfect match.
-
eqObjects(object1, object2)
:- returns true or false, based on a perfect match.
-
assertObjectsEqual(actual, expected)
:- compares two objects it takes in and prints out a message if they match or not.
-
assertArraysEqual(actual, expected)
:- compares two arrays it takes in and prints out a message if they match or not.
-
assertEqual(actual, expected)
:- compares two values it takes in and prints out a message if they match or not.