http2-exit-cleanly

index.html

<!-- Empty -->

main.js

const childProcess = require('child_process')
const path = require('path')

const { stdout, stderr, status } = childProcess.spawnSync(process.execPath, [path.join(__dirname, 'renderer.js')], {
  env: { ELECTRON_RUN_AS_NODE: 'true' }
});

console.log(stderr.toString(), stdout.toString())
process.exit(status)

preload.js

// Empty

renderer.js

const { strictEqual } = require('assert');
const { createServer, connect } = require('http2');
const { spawnSync } = require('child_process');

if (process.argv[2] !== 'child') {
  const {
    stdout, stderr, status
  } = spawnSync(process.execPath, [__filename, 'child'], { encoding: 'utf8' });
  strictEqual(stderr, '');
  strictEqual(stdout, '');
  strictEqual(status, 0);
} else {
  const server = createServer();
  server.listen(0, () => {
    const client = connect(`http://localhost:${server.address().port}`);
    client.on('connect', () => {
      client.close();
      server.close();
    });
  });
}

styles.css

/* Empty */