Node - Run last bash command - command-line

Question

What is happening:
user starts local react server via any variation of npm [run] start[:mod]
my prestart script runs and kills the local webserver if found
Once pkill node is run, that kills the npm start script as well so I want to run the starting command again.
My current solution is to do
history 1 | awk '/some-regex/
to get the name of the last command which I can run with
exec('bash -c 'sleep 1 ; pkill node && ${previousCommand}' &')
This is starting to get pretty hacky so I'm thinking there has to be a better way to do this.
My node script so far:
const execSync = require("child_process").execSync;
const exec = require("child_process").exec;
const netcat = execSync('netcat -z 127.0.0.1 3000; echo $?') == 1 ? true : false; // true when :3000 is available #jkr
if(netcat == false) {
exec(`bash -c 'sleep 1 ; pkill node' &`);
console.warn('\x1b[32m%s\x1b[0m', `\nKilling all local webservers, please run 'npm start' again.\n`);
}

Answer 1

There seems to be an npm package which does this: kill-port
const kill = require('kill-port')
kill(port, 'tcp').then(console.log).catch(console.log)
Source: https://www.npmjs.com/package/kill-port
I understand this might not answer the question of running last command but should solve OP's problem.