Tiny update: after adding 16 characters (“this._object || ”), Reiterate is now compatible with Prototype 1.6.0’s revised Hash API. Also, the gzipped copy is now even smaller, thanks to a different compression strategy. Essentially, when using Packer (or PackR for that matter), using ‘shrink variables’ plus gzip compression will result in the smallest an fastest-to-execute files. Base-62 is there in case you can’t use gzip for some reason: it creates smaller files than variable-shrinking on its own.