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 @tzheng/lotide
Require it:
const _ = require('@tzheng/lotide');
Call it:
const results = _.tail([1, 2, 3]) // => [2, 3]
Documentation
The following functions are currently implemented:
-
assertArraysEqual(arr1, arr2): assertion function to check if two arrays are equal -
assertEqual(actual, expected): assertion function to check if two primitives are equal -
assertObjectsEqual(actual, expected): assertion function to check if two objects are equal -
countLetters(string): returns a count of the number of letters in input -
countOnly(allItems, itemsToCount): maps a count of each unique element of itemsToCount in allItems -
eqArrays(arr1, arr2): checks if two arrays are equal (deep check to be implemented) -
eqObjects(actual, expected): deep checks if two objects are equal -
findKey(object, callback): returns the key of the first object with key in object else returns undefined -
findKeyByValue(object, value): returns the key of the first object with value in object else returns undefined -
flatten(arr): returns a 1-dimentional array of flattened n-dimentional arrays of elements -
head(arr): returns the first element in an array -
letterPositions(sentence): returns a map of letters (key) and array of positions that letter appears in sentence (value) -
map(array, callback): returns a new array whose elements consist of each element of the original array after callback function -
middle(array): returns an array of the middle element(s) in an array -
tail(arr): returns an array of all the elements after the first element in arr -
takeUntil(array, callback): returns an array of values from original array that until the first element that evaluates to false from the callback -
without(source, itemsToRemove): returns a new array consisting of all elements in source without elements in itemsToRemove