Redirect a url to a localhost port

ipMap.sh

# First we need to map our localhost + port combo to another ip. You'll need root priviliges for this
sudo ifconfig lo0 10.0.0.1 alias && \
echo "rdr pass on lo0 inet proto tcp from any to 10.0.0.1 port 80 -> 127.0.0.1 port 3000" | sudo pfctl -ef -
# Now edit /etc/hosts
sudo vim /etc/hosts
# and add the following to the list
# NOTE: Do not edit anthing on this list you did not add
10.0.0.1 mydomain.dev
10.0.0.1 www.mydomain.dev
# I choose to use a .dev TLD as these are never going to conflict seeing how google has bought these TLD's
# and kept it for internal use only. You can use what ever you like
# Now browser to mydomain.dev or whatever you called it in your browser and presto!
It should load up whatever server you set up on port 3000

This saved my life(or at least made it a lot easier), thanks!