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 @mithraperera/lotide
Require it:
const _ = require('@mithraperera/lotide');
Call it:
const results = _.tail([1, 2, 3]) // => [2, 3]
Documentation
The following functions are currently implemented:
-
head(...)
: takes an array and returns the first element in the array. -
tail(...)
: takes an array and returns the last element in the array. -
eqArrays(...)
: takes in 2 arrays and returns true if the arrays are equal and false otherwise. -
assertArraysEqual(...)
: prints an appropriate message after comparing the two arrays. -
without(...)
: takes in a source array and an itemsToRemove arrays and returns only the items from the source array that are not in the itemsToRemove array. -
flatten(...)
: takes in an array that contains elements including nested array of elements and returns a flattened version of the array. -
middle(...)
: takes in an array and returns middle most element of the array. -
countOnly(...)
: given an array and an object, it will return an object containing counts of everything that the input object listed. -
countLetters(...)
: the function should take in a sentence (as a string) and then return a count of each of the letters in that sentence. -
letterPositions(...)
: return all the indices (zero-based positions) in the string where each character is found. -
findKeyByValue(...)
: scan the object and return the first key which contains the given value. If no key with that given value is found, then it should return undefined -
eqObjects(...)
: takes in 2 objects and return true if they are equal and false otherwise. -
assertObjectsEqual(...)
: takes in 2 objects and returns true if they are equal and false otherwise. -
map(...)
: takes an array to map and a callback function as arguments and returns a new array based on the results of the callback function. -
takeUntil(...)
: takes an array to work with and a callback as arguments and returns a "slice of the array with elements taken from the beginning." It should keep going until the callback/predicate returns a truthy value. -
findKey(...)
: takes in an object and a callback. It should scan the object and return the first key for which the callback returns a truthy value. If no key is found, then it should return undefined.