launch.sh

#!/bin/bash
# Launch without a controlling TTY
# This is useful if you want it to persist when the terminal closes
# and to convince SSH to ask for passwords with a popup box
# instead of in the terminal

# SSH is quite picky about when it considers itself to be detached
# (it is not enough for stdin to be not-a-tty, since it does some
#  magic to talk to the tty directly to get the password securely)
# https://unix.stackexchange.com/a/261737

# So we must use these tricks. setsid works on Linux but
# is not normally on macos, so we instead use open
# to re-launch the current script

#export PATH=/usr/local/Cellar/util-linux/2.36/bin/:$PATH

[ -z "$BASH" ] && { echo "Must be run with bash" ; exit ; }

DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
cd "$DIR"

# Hack to show name in mac menu
if [ "$(uname)" == "Darwin" ]; then
defaults write "$DIR"/node_modules/electron/dist/Electron.app/Contents/Info.plist CFBundleName -string "Awesome Port Forwarding" 2>&-
cp "$DIR"/cat.icns "$DIR"/node_modules/electron/dist/Electron.app/Contents/Resources/electron.icns
# Try to symlink the Electron.app default app to the base so "Keep in dock" doesn't
# open the demo app (fragile hack during development to avoid distributing Electron properly)
ln -s "$DIR" node_modules/electron/dist/Electron.app/Contents/Resources/app
fi

if [ "$PPID" -eq 1 ]; then
    echo "Child of init"
    npm start
else
    echo "Child of controlling terminal"
    if command -v setsid ; then
        echo "Using setsid"
        setsid npm start 0>&- 1>&- 2>&- &
    elif [ "$(uname)" == "Darwin" ]; then
        echo "Using open"
        open -a "$PWD"/launch.sh
    else
        echo "Failed to detach"
        npm start 
    fi
fi