Create React App - Deploy and Rollback scripts

deploy-rollback.txt

It's annoying to see the build folder being removed while a new build is being created. Error 500 for as long as the build takes...

Instead of 'build', the 'live' folder is being served to the client.
When the build has succeeded, the 'live' folder is being renamed to 'backup', and the 'build' is being renamed to 'live' to take its place. On rollback, the 'backup' will be put back into place.

    "removeBackup": "! test -d backup || rm -r ./backup",
    "removeRevoked": "! test -d revoked || rm -r ./revoked",
    "renameLiveToBackup": "! test -d live || mv ./live ./backup",
    "renameLiveToRevoked": "! test -d live || mv ./live ./revoked",
    "renameBackupToLive": "! test -d backup || mv ./backup ./live",
    "renameBuildToLive": "mv ./build ./live",
    "deploy": "npm run build && npm run removeBackup && npm run renameLiveToBackup && npm run renameBuildToLive",
    "rollback": "npm run removeRevoked && npm run renameLiveToRevoked && npm run renameBackupToLive"