search

vercel / micro-dev

The development environment for `micro`
MIT License
706 stars 77 forks source link

Purpose of SIGUSR2 signal? #130

Closed sramam closed 2 years ago

sramam commented 2 years ago

Use case

I need to run an aux process and micro-dev my-server.js. I use concurrently for this.

The problem

Changes are detected and a restart attempt it made. However, the restart process never actually executes.

I've narrowed it down to the SIGUSR2 event emission - meaning micro-dev works as expected until it tries to emit that event. And removing that event emission, restart works as expected.

Wondering why it's needed and what good options are available to resolve my issue

sramam commented 2 years ago

Not sure I understand why this happens, but adding a noop signal handler for SIGUSR2 allows a successful restart.

process.on("SIGUSR2", () => {});

The best I can make out from the documentation - this is an optional signal. Concurrently doesn't seem to require it. Would appreciate being enlightened.

Hopefully the workaround (is it?!) will help others.