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.
npm install @sergerodriguez/lotide
const _ = require('@sergerodriguez/lotide');
const results = _.tail([1, 2, 3]) // => [2, 3]
The following functions are currently implemented:
assertArraysEqual(): takes in two arrays and prints an appropriate message to the console telling us if they match or not.
assertEqual(): the function compares the two values it takes in and prints out a message telling us if they match or not.
assertObjectsEqual(): take in two objects and prints an appropriate message to the console telling us if they match or not.
countLetters(): returns an object where each unique character encountered is a property of the object and the value for that property/key should be the number of occurrences for that character.
countOnly(): takes in a collection of items and returns counts for a specific subset of those items.
eqArrays(): takes in two arrays and returns true or false, based on a perfect match.
eqObjects(): takes in two objects and returns true or false, based on a perfect match.
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.
findKeyByValue(): takes in an object and a value. It should 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.
flatten(): takes in an array of arrays and returns a "flattened" version of the array.
head(): returns the first item in an array.
letterPositions(): returns all the indices (zero-based positions) in the string where each character is found.
map(): returns a new array based on the results of the callback function.
middle(): takes in an array and return the middle-most element(s) of the given array.
tail(): returns the "tail" of an array: everything except for the first item (head) of the provided array.
takeUntil():returns a "slice of the array with elements taken from the beginning." It should keep going until the callback/predicate returns a truthy value.
without(): returns a subset of a given array, removing unwanted elements.