process.send is broken with pm2

[Micnubinub]

What version of Bun is running?

1.1.42

What platform is your computer?

Darwin 24.2.0 arm64 arm

What steps can reproduce the bug?

When you make a file that uses process.send it crashes

setInterval( () => {
   process.send({message: 'test'}, (a) => {
     console.log('send handle', a)
   }, undefined, console.error);
}, 4000 );

This runs just fine: pm2 start --name test --no-autorestart --no-daemon app.js -i 2
This crashes: pm2 start --interpreter /opt/homebrew/bin/bun --name test --no-autorestart --no-daemon tmo.js -i 2
crashes with strings, json, stringified json

What is the expected behavior?

Send message

What do you see instead?

Error:

undefined:1
{"message":"test"}
^
SyntaxError: Unexpected token '', "{"message":"test"}" is not valid JSON

Additional information

No response