My solutions for coding challenges, puzzles and CTFs

Vim configuration

List of image extensions

Get a random boolean

Get the last leap year since a specific date

Parse an `rgb()` color

A ponyfill for ES6 Math.tanh

A ponyfill for ES6 Math.atanh

Check if an element is a button

Check if a number is a HTTP success status code

Uppercase the keys of an object

Split an array into arrays of a specific length

Get a random letter from the English alphabet

Get a random bit (0 or 1)

Convert radians to degrees

Get the quarter of the year a date is in

Regex to match a percentage value

Check if a buffer/Uint8Array is a WOFF2 file

Node module to easily check if an object is an ES6 WeakSet

Node module to easily check if an object is an ES6 WeakMap

Check if a string is all uppercase

Node module to easily check if an object is an ES6 set

Check if a number is a HTTP server error code

Check if a Buffer/Uint8Array is a postscript