qs-hash
A simple querystring encoder and decoder, with an option to skip encoding URL components if you're going to use the encoded strings in URL hashes rather than the path segment.
As seen in iD and geojson.io.
usage
npm install --save qs-hashapi
qsString(object, noencode)
Encode an object to a string, noencode decides whether it skips encoding
stringQs(string)
Decode a string to an object.