Upgraded to the macOS Sierra. React Native Packager seems to fail

2016-11-14 22:21 node[488] (FSEvents.framework) FSEventStreamStart: register_with_server: ERROR: f2d_register_rpc() => (null) (-22)

2016-11-14 22:21 node[488] (FSEvents.framework) FSEventStreamStart: register_with_server: ERROR: f2d_register_rpc() => (null) (-22)

2016-11-14 22:21 node[488] (FSEvents.framework) FSEventStreamStart: register_with_server: ERROR: f2d_register_rpc() => (null) (-22)

2016-11-14 22:21 node[488] (FSEvents.framework) FSEventStreamStart: register_with_server: ERROR: f2d_register_rpc() => (null) (-22)

2016-11-14 22:21 node[488] (FSEvents.framework) FSEventStreamStart: register_with_server: ERROR: f2d_register_rpc() => (null) (-22)

 ERROR  Error watching file for changes: EMFILE

{"code":"EMFILE","errno":"EMFILE","syscall":"Error watching file for changes:","filename":null}

Error: Error watching file for changes: EMFILE

    at exports._errnoException (util.js:1026:11)

   at FSEvent.FSWatcher._handle.onchange (fs.js:1406:11)

SImple way to solve it is  : 

$ cd /

$ cd usr/local/var/run/watchman/

$ ls

<user>-state

MacBook-Pro:watchman user$ rm -rf <user>-state/

If not then, 

1. increase max file limit

# check open file limit
sysctl kern.maxfiles

# edit sysctl
sudo vim /etc/sysctl.conf

# add these two lines
kern.maxfiles=10485760
kern.maxfilesperproc=1048576

# reboot
sudo reboot

# check new file limit
sysctl kern.maxfiles

2. upgrade to watchman 4.6

# clone repo
git clone https://github.com/facebook/watchman.git

# change to master branch
git checkout -b v4.6.0 v4.6.0

# run compiler
./autogen.sh
./configure --enable-lenient --without-pcre --with-python
make
sudo make install

# check watchman version
watchman -v

# result should be 4.6.0

Do not forget to reboot the computer.