pad.pub0.org/tests/ratelimit/send_changesets.js

try {
  var etherpad = require('../../src/node_modules/etherpad-cli-client');
  // ugly
} catch {
  var etherpad = require('etherpad-cli-client');
}
const pad = etherpad.connect(process.argv[2]);
pad.on('connected', () => {
  setTimeout(() => {
    setInterval(() => {
      pad.append('1');
    }, process.argv[3]);
  }, 500); // wait because CLIENT_READY message is included in ratelimit

  setTimeout(() => {
    process.exit(0);
  }, 11000);
});
// in case of disconnect exit code 1
pad.on('message', (message) => {
  if (message.disconnect == 'rateLimited') {
    process.exit(1);
  }
});