You can use a package to patch your javascript, if you find a bug in production and dont want to perform a production deploy. In other words, if you need a quick fix…
- Make a package containing the file you wish to patch, perhaps a javascript file in your clientlibs, install it in the package manager in your production author.
- Go into CRX/DE, drill down to the file you are patching, click on it, click the replication tab, click replicate
- Go to the CQ welcome screen, Tools > Replication > Activate Tree > Drill down, select file, activate
- Update cachebreaker which will force clientlibs to recompile