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 @rlitoncs/lotide
Require it:
const _ = require('@rlitoncs/lotide');
Call it:
const results = _.tail([1, 2, 3]) // => [2, 3]
The following functions are currently implemented:
-
assertArraysEqual(arr1, arr2)
: takes in 2 arrays and checks whether the 2 arrays are matching. If it is, the arrays are outputted along with an assertion message displaying if it has passed or failed -
assertEqual(actual, expected)
: expects two arguments and returns a passed assertion or a failed assertion, depending on whether the two arguments strictly match -
assertObjectsEqual(object1, object2)
: takes in 2 objects and checks to see if the objects are equal. If it is, the objects are outputted along with an assertion message displaying a if it passed or failed -
countLetters(string)
: takes in a string and counts the number of occurences of each letter in the string. Returns a object back with the occurences of each letter in the string -
countOnly(allItems, itemsToCount)
: takes in an array of items and a itemsToCount object. The array counts only the items that need to be counted for in itemsToCount object, then returns a new object with the selected items and it's associated count value -
eqArrays(arr1, arr2)
: takes in 2 arrays and checks that the elements of both arrays are identical in value and position. Returns true if both arrays are identical, otherwise false -
eqObjects(object1, object2)
: takes in 2 objects and checks to see if the both objects have identical keys and values. Returns true if both objects are identical, otherwise false -
findKey(object, callbackF)
: takes in an object and a callback function and returns the key that is true according to the callback function -
findKeyByValue(object, value)
: takes in an object, and a target value, and returns the first key that matches the target value -
flatten(arr)
: will take in an array containing elements including nested arrays of elements, and return a "flattened" version of the array -
head(arr)
: takes in an array and returns the first element of the array -
tail(arr)
: takes in an array and returns the rest of the array without the first element -
letterPositions(string)
: takes in a string and returns an object of all the indexes of where each letter occurs in the sentence -
map(arr)
: takes in an array and a callback function. Returns a new array with the new content as applied from the callback function. -
middle(arr)
: will take in an array and returns an array of the middle-most element(s) of the given array -
takeUntil(arr, callbackF)
: takes in an array and a callback function and returns a new array with content, up until it satifies the callback function condition -
without(sourceArr, itemsToRemove)
: takes in a source array and a itemsToRemove array. It should return a new array with only those elements from source that are not present in the itemsToRemove array