Start debugging a running node process

README.md

Shows a list of all node processes and lets you select which one you want to debug.

For example

$ debug.sh
1) 73428 node webpack/webpackDevServer.js
2) 73494 node build/dist/server.js
Select which process to debug: █

debug.sh

#!/usr/bin/env bash

# Get info for all node processes
PROCESSES=$(ps | grep ' node ')
# Split on lines instead of spaces
IFS=$'\n'
# Change select prompt
PS3='Select which process to debug: '

# Prompt user for node process to signal
select PROCESS in $PROCESSES
do
  # Split on spaces
  IFS=' '
  # Get array of parts, first part is PID
  PARTS=( $PROCESS )
  # Send signal to node process to start debugger
  kill -SIGUSR1 $PARTS
  break
done