Robber Language (Rövarspråket)
A JavaScript library for encoding and decoding Rövarspråket (The Robber Language), invented by the Swedish author Astrid Lindgren.
Example
var r = require('robber-language');
r.encode('stubborn') // -> 'sostotubobboborornon'
r.decode('sostotubobboborornon') // -> 'stubborn'