The tool found in this folder serves the purpose of updating the isoLangs object found in //src/js/common.js, which contains a list of possible target translation languages.
Run go run langs.go in order to obtain the updated isoLangs object, and copy it to //src/js/common.js. If it fails, run it again until it works (it might take 3 or 4 attempts).
If the way the languages are encoded into https://translate.google.com/ change, this tool will no longer work, but it probably can be slightly adapted to make it work again. It is expected that this tool will not work in the future.