text: // Copyright Joyent, Inc. and other Node contributors.
  //
  // Permission is hereby granted, free of charge, to any person obtaining a
  // copy of this software and associated documentation files (the
  // "Software"), to deal in the Software without restriction, including
  // without limitation the rights to use, copy, modify, merge, publish,
  // distribute, sublicense, and/or sell copies of the Software, and to permit
  // persons to whom the Software is furnished to do so, subject to the
  // following conditions:
  //
  // The above copyright notice and this permission notice shall be included
  // in all copies or substantial portions of the Software.
  //
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
  // NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
  // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  // USE OR OTHER DEALINGS IN THE SOFTWARE.
  
  'use strict';
  require('../common');
  const common = require('../common');
  const assert = require('assert');
  const domain = require('domain');
  
  // no matter what happens, we should increment a 10 times.
  let a = 0;
  log();
  function log() {
    console.log(a++, process.domain);
    if (a < 10) setTimeout(log, 20);
  }
  
  // in 50ms we'll throw an error.
  setTimeout(err, 50);
  function err() {
    const d = domain.create();
    d.on('error', handle);
    d.run(err2);
  
    function err2() {
      // this timeout should never be called, since the domain gets
      // disposed when the error happens.
      setTimeout(common.mustNotCall(), 1);
  
      // this function doesn't exist, and throws an error as a result.
      err3(); // eslint-disable-line no-undef
    }
  
    function handle(e) {
      // this should clean up everything properly.
      d.dispose();
      console.error(e);
      console.error('in handler', process.domain, process.domain === d);
    }
  }
  
  process.on('exit', function() {
    assert.strictEqual(a, 10);
    console.log('ok');
  });
  