Index: frontend/node_modules/events/tests/add-listeners.js
===================================================================
--- frontend/node_modules/events/tests/add-listeners.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/events/tests/add-listeners.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,111 @@
+// 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.
+
+var common = require('./common');
+var assert = require('assert');
+var EventEmitter = require('../');
+
+{
+  var ee = new EventEmitter();
+  var events_new_listener_emitted = [];
+  var listeners_new_listener_emitted = [];
+
+  // Sanity check
+  assert.strictEqual(ee.addListener, ee.on);
+
+  ee.on('newListener', function(event, listener) {
+    // Don't track newListener listeners.
+    if (event === 'newListener')
+      return;
+
+    events_new_listener_emitted.push(event);
+    listeners_new_listener_emitted.push(listener);
+  });
+
+  var hello = common.mustCall(function(a, b) {
+    assert.strictEqual('a', a);
+    assert.strictEqual('b', b);
+  });
+
+  ee.once('newListener', function(name, listener) {
+    assert.strictEqual(name, 'hello');
+    assert.strictEqual(listener, hello);
+
+    var listeners = this.listeners('hello');
+    assert.ok(Array.isArray(listeners));
+    assert.strictEqual(listeners.length, 0);
+  });
+
+  ee.on('hello', hello);
+  ee.once('foo', assert.fail);
+
+  assert.ok(Array.isArray(events_new_listener_emitted));
+  assert.strictEqual(events_new_listener_emitted.length, 2);
+  assert.strictEqual(events_new_listener_emitted[0], 'hello');
+  assert.strictEqual(events_new_listener_emitted[1], 'foo');
+
+  assert.ok(Array.isArray(listeners_new_listener_emitted));
+  assert.strictEqual(listeners_new_listener_emitted.length, 2);
+  assert.strictEqual(listeners_new_listener_emitted[0], hello);
+  assert.strictEqual(listeners_new_listener_emitted[1], assert.fail);
+
+  ee.emit('hello', 'a', 'b');
+}
+
+// just make sure that this doesn't throw:
+{
+  var f = new EventEmitter();
+
+  f.setMaxListeners(0);
+}
+
+{
+  var listen1 = function() {};
+  var listen2 = function() {};
+  var ee = new EventEmitter();
+
+  ee.once('newListener', function() {
+    var listeners = ee.listeners('hello');
+    assert.ok(Array.isArray(listeners));
+    assert.strictEqual(listeners.length, 0);
+    ee.once('newListener', function() {
+      var listeners = ee.listeners('hello');
+      assert.ok(Array.isArray(listeners));
+      assert.strictEqual(listeners.length, 0);
+    });
+    ee.on('hello', listen2);
+  });
+  ee.on('hello', listen1);
+  // The order of listeners on an event is not always the order in which the
+  // listeners were added.
+  var listeners = ee.listeners('hello');
+  assert.ok(Array.isArray(listeners));
+  assert.strictEqual(listeners.length, 2);
+  assert.strictEqual(listeners[0], listen2);
+  assert.strictEqual(listeners[1], listen1);
+}
+
+// Verify that the listener must be a function
+assert.throws(function() {
+  var ee = new EventEmitter();
+
+  ee.on('foo', null);
+}, /^TypeError: The "listener" argument must be of type Function. Received type object$/);
Index: frontend/node_modules/events/tests/check-listener-leaks.js
===================================================================
--- frontend/node_modules/events/tests/check-listener-leaks.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/events/tests/check-listener-leaks.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,101 @@
+// 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.
+
+var common = require('./common');
+var assert = require('assert');
+var events = require('../');
+
+// Redirect warning output to tape.
+var consoleWarn = console.warn;
+console.warn = common.test.comment;
+
+common.test.on('end', function () {
+  console.warn = consoleWarn;
+});
+
+// default
+{
+  var e = new events.EventEmitter();
+
+  for (var i = 0; i < 10; i++) {
+    e.on('default', common.mustNotCall());
+  }
+  assert.ok(!e._events['default'].hasOwnProperty('warned'));
+  e.on('default', common.mustNotCall());
+  assert.ok(e._events['default'].warned);
+
+  // specific
+  e.setMaxListeners(5);
+  for (var i = 0; i < 5; i++) {
+    e.on('specific', common.mustNotCall());
+  }
+  assert.ok(!e._events['specific'].hasOwnProperty('warned'));
+  e.on('specific', common.mustNotCall());
+  assert.ok(e._events['specific'].warned);
+
+  // only one
+  e.setMaxListeners(1);
+  e.on('only one', common.mustNotCall());
+  assert.ok(!e._events['only one'].hasOwnProperty('warned'));
+  e.on('only one', common.mustNotCall());
+  assert.ok(e._events['only one'].hasOwnProperty('warned'));
+
+  // unlimited
+  e.setMaxListeners(0);
+  for (var i = 0; i < 1000; i++) {
+    e.on('unlimited', common.mustNotCall());
+  }
+  assert.ok(!e._events['unlimited'].hasOwnProperty('warned'));
+}
+
+// process-wide
+{
+  events.EventEmitter.defaultMaxListeners = 42;
+  var e = new events.EventEmitter();
+
+  for (var i = 0; i < 42; ++i) {
+    e.on('fortytwo', common.mustNotCall());
+  }
+  assert.ok(!e._events['fortytwo'].hasOwnProperty('warned'));
+  e.on('fortytwo', common.mustNotCall());
+  assert.ok(e._events['fortytwo'].hasOwnProperty('warned'));
+  delete e._events['fortytwo'].warned;
+
+  events.EventEmitter.defaultMaxListeners = 44;
+  e.on('fortytwo', common.mustNotCall());
+  assert.ok(!e._events['fortytwo'].hasOwnProperty('warned'));
+  e.on('fortytwo', common.mustNotCall());
+  assert.ok(e._events['fortytwo'].hasOwnProperty('warned'));
+}
+
+// but _maxListeners still has precedence over defaultMaxListeners
+{
+  events.EventEmitter.defaultMaxListeners = 42;
+  var e = new events.EventEmitter();
+  e.setMaxListeners(1);
+  e.on('uno', common.mustNotCall());
+  assert.ok(!e._events['uno'].hasOwnProperty('warned'));
+  e.on('uno', common.mustNotCall());
+  assert.ok(e._events['uno'].hasOwnProperty('warned'));
+
+  // chainable
+  assert.strictEqual(e, e.setMaxListeners(1));
+}
Index: frontend/node_modules/events/tests/common.js
===================================================================
--- frontend/node_modules/events/tests/common.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/events/tests/common.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,104 @@
+// 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.
+
+var test = require('tape');
+var assert = require('assert');
+
+var noop = function() {};
+
+var mustCallChecks = [];
+
+function runCallChecks(exitCode) {
+  if (exitCode !== 0) return;
+
+  var failed = filter(mustCallChecks, function(context) {
+    if ('minimum' in context) {
+      context.messageSegment = 'at least ' + context.minimum;
+      return context.actual < context.minimum;
+    } else {
+      context.messageSegment = 'exactly ' + context.exact;
+      return context.actual !== context.exact;
+    }
+  });
+
+  for (var i = 0; i < failed.length; i++) {
+    var context = failed[i];
+    console.log('Mismatched %s function calls. Expected %s, actual %d.',
+        context.name,
+        context.messageSegment,
+        context.actual);
+    // IE8 has no .stack
+    if (context.stack) console.log(context.stack.split('\n').slice(2).join('\n'));
+  }
+
+  assert.strictEqual(failed.length, 0);
+}
+
+exports.mustCall = function(fn, exact) {
+  return _mustCallInner(fn, exact, 'exact');
+};
+
+function _mustCallInner(fn, criteria, field) {
+  if (typeof criteria == 'undefined') criteria = 1;
+
+  if (typeof fn === 'number') {
+    criteria = fn;
+    fn = noop;
+  } else if (fn === undefined) {
+    fn = noop;
+  }
+
+  if (typeof criteria !== 'number')
+    throw new TypeError('Invalid ' + field + ' value: ' + criteria);
+
+  var context = {
+    actual: 0,
+    stack: (new Error()).stack,
+    name: fn.name || '<anonymous>'
+  };
+
+  context[field] = criteria;
+
+  // add the exit listener only once to avoid listener leak warnings
+  if (mustCallChecks.length === 0) test.onFinish(function() { runCallChecks(0); });
+
+  mustCallChecks.push(context);
+
+  return function() {
+    context.actual++;
+    return fn.apply(this, arguments);
+  };
+}
+
+exports.mustNotCall = function(msg) {
+  return function mustNotCall() {
+    assert.fail(msg || 'function should not have been called');
+  };
+};
+
+function filter(arr, fn) {
+  if (arr.filter) return arr.filter(fn);
+  var filtered = [];
+  for (var i = 0; i < arr.length; i++) {
+    if (fn(arr[i], i, arr)) filtered.push(arr[i]);
+  }
+  return filtered
+}
Index: frontend/node_modules/events/tests/errors.js
===================================================================
--- frontend/node_modules/events/tests/errors.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/events/tests/errors.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,13 @@
+'use strict';
+var assert = require('assert');
+var EventEmitter = require('../');
+
+var EE = new EventEmitter();
+
+assert.throws(function () {
+  EE.emit('error', 'Accepts a string');
+}, 'Error: Unhandled error. (Accepts a string)');
+
+assert.throws(function () {
+  EE.emit('error', { message: 'Error!' });
+}, 'Unhandled error. ([object Object])');
Index: frontend/node_modules/events/tests/events-list.js
===================================================================
--- frontend/node_modules/events/tests/events-list.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/events/tests/events-list.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,28 @@
+'use strict';
+
+var EventEmitter = require('../');
+var assert = require('assert');
+
+var EE = new EventEmitter();
+var m = function() {};
+EE.on('foo', function() {});
+assert.equal(1, EE.eventNames().length);
+assert.equal('foo', EE.eventNames()[0]);
+EE.on('bar', m);
+assert.equal(2, EE.eventNames().length);
+assert.equal('foo', EE.eventNames()[0]);
+assert.equal('bar', EE.eventNames()[1]);
+EE.removeListener('bar', m);
+assert.equal(1, EE.eventNames().length);
+assert.equal('foo', EE.eventNames()[0]);
+
+if (typeof Symbol !== 'undefined') {
+  var s = Symbol('s');
+  EE.on(s, m);
+  assert.equal(2, EE.eventNames().length);
+  assert.equal('foo', EE.eventNames()[0]);
+  assert.equal(s, EE.eventNames()[1]);
+  EE.removeListener(s, m);
+  assert.equal(1, EE.eventNames().length);
+  assert.equal('foo', EE.eventNames()[0]);
+}
Index: frontend/node_modules/events/tests/events-once.js
===================================================================
--- frontend/node_modules/events/tests/events-once.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/events/tests/events-once.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,234 @@
+'use strict';
+
+var common = require('./common');
+var EventEmitter = require('../').EventEmitter;
+var once = require('../').once;
+var has = require('has');
+var assert = require('assert');
+
+function Event(type) {
+  this.type = type;
+}
+
+function EventTargetMock() {
+  this.events = {};
+
+  this.addEventListener = common.mustCall(this.addEventListener);
+  this.removeEventListener = common.mustCall(this.removeEventListener);
+}
+
+EventTargetMock.prototype.addEventListener = function addEventListener(name, listener, options) {
+  if (!(name in this.events)) {
+    this.events[name] = { listeners: [], options: options || {} }
+  }
+  this.events[name].listeners.push(listener);
+};
+
+EventTargetMock.prototype.removeEventListener = function removeEventListener(name, callback) {
+  if (!(name in this.events)) {
+    return;
+  }
+  var event = this.events[name];
+  var stack = event.listeners;
+
+  for (var i = 0, l = stack.length; i < l; i++) {
+    if (stack[i] === callback) {
+      stack.splice(i, 1);
+      if (stack.length === 0) {
+        delete this.events[name];
+      }
+      return;
+    }
+  }
+};
+
+EventTargetMock.prototype.dispatchEvent = function dispatchEvent(arg) {
+  if (!(arg.type in this.events)) {
+    return true;
+  }
+
+  var event = this.events[arg.type];
+  var stack = event.listeners.slice();
+
+  for (var i = 0, l = stack.length; i < l; i++) {
+    stack[i].call(null, arg);
+    if (event.options.once) {
+      this.removeEventListener(arg.type, stack[i]);
+    }
+  }
+  return !arg.defaultPrevented;
+};
+
+function onceAnEvent() {
+  var ee = new EventEmitter();
+
+  process.nextTick(function () {
+    ee.emit('myevent', 42);
+  });
+
+  return once(ee, 'myevent').then(function (args) {
+    var value = args[0]
+    assert.strictEqual(value, 42);
+    assert.strictEqual(ee.listenerCount('error'), 0);
+    assert.strictEqual(ee.listenerCount('myevent'), 0);
+  });
+}
+
+function onceAnEventWithTwoArgs() {
+  var ee = new EventEmitter();
+
+  process.nextTick(function () {
+    ee.emit('myevent', 42, 24);
+  });
+
+  return once(ee, 'myevent').then(function (value) {
+    assert.strictEqual(value.length, 2);
+    assert.strictEqual(value[0], 42);
+    assert.strictEqual(value[1], 24);
+  });
+}
+
+function catchesErrors() {
+  var ee = new EventEmitter();
+
+  var expected = new Error('kaboom');
+  var err;
+  process.nextTick(function () {
+    ee.emit('error', expected);
+  });
+
+  return once(ee, 'myevent').then(function () {
+    throw new Error('should reject')
+  }, function (err) {
+    assert.strictEqual(err, expected);
+    assert.strictEqual(ee.listenerCount('error'), 0);
+    assert.strictEqual(ee.listenerCount('myevent'), 0);
+  });
+}
+
+function stopListeningAfterCatchingError() {
+  var ee = new EventEmitter();
+
+  var expected = new Error('kaboom');
+  var err;
+  process.nextTick(function () {
+    ee.emit('error', expected);
+    ee.emit('myevent', 42, 24);
+  });
+
+  // process.on('multipleResolves', common.mustNotCall());
+
+  return once(ee, 'myevent').then(common.mustNotCall, function (err) {
+    // process.removeAllListeners('multipleResolves');
+    assert.strictEqual(err, expected);
+    assert.strictEqual(ee.listenerCount('error'), 0);
+    assert.strictEqual(ee.listenerCount('myevent'), 0);
+  });
+}
+
+function onceError() {
+  var ee = new EventEmitter();
+
+  var expected = new Error('kaboom');
+  process.nextTick(function () {
+    ee.emit('error', expected);
+  });
+
+  var promise = once(ee, 'error');
+  assert.strictEqual(ee.listenerCount('error'), 1);
+  return promise.then(function (args) {
+    var err = args[0]
+    assert.strictEqual(err, expected);
+    assert.strictEqual(ee.listenerCount('error'), 0);
+    assert.strictEqual(ee.listenerCount('myevent'), 0);
+  });
+}
+
+function onceWithEventTarget() {
+  var et = new EventTargetMock();
+  var event = new Event('myevent');
+  process.nextTick(function () {
+    et.dispatchEvent(event);
+  });
+  return once(et, 'myevent').then(function (args) {
+    var value = args[0];
+    assert.strictEqual(value, event);
+    assert.strictEqual(has(et.events, 'myevent'), false);
+  });
+}
+
+function onceWithEventTargetError() {
+  var et = new EventTargetMock();
+  var error = new Event('error');
+  process.nextTick(function () {
+    et.dispatchEvent(error);
+  });
+  return once(et, 'error').then(function (args) {
+    var err = args[0];
+    assert.strictEqual(err, error);
+    assert.strictEqual(has(et.events, 'error'), false);
+  });
+}
+
+function prioritizesEventEmitter() {
+  var ee = new EventEmitter();
+  ee.addEventListener = assert.fail;
+  ee.removeAllListeners = assert.fail;
+  process.nextTick(function () {
+    ee.emit('foo');
+  });
+  return once(ee, 'foo');
+}
+
+var allTests = [
+  onceAnEvent(),
+  onceAnEventWithTwoArgs(),
+  catchesErrors(),
+  stopListeningAfterCatchingError(),
+  onceError(),
+  onceWithEventTarget(),
+  onceWithEventTargetError(),
+  prioritizesEventEmitter()
+];
+
+var hasBrowserEventTarget = false;
+try {
+  hasBrowserEventTarget = typeof (new window.EventTarget().addEventListener) === 'function' &&
+    new window.Event('xyz').type === 'xyz';
+} catch (err) {}
+
+if (hasBrowserEventTarget) {
+  var onceWithBrowserEventTarget = function onceWithBrowserEventTarget() {
+    var et = new window.EventTarget();
+    var event = new window.Event('myevent');
+    process.nextTick(function () {
+      et.dispatchEvent(event);
+    });
+    return once(et, 'myevent').then(function (args) {
+      var value = args[0];
+      assert.strictEqual(value, event);
+      assert.strictEqual(has(et.events, 'myevent'), false);
+    });
+  }
+
+  var onceWithBrowserEventTargetError = function onceWithBrowserEventTargetError() {
+    var et = new window.EventTarget();
+    var error = new window.Event('error');
+    process.nextTick(function () {
+      et.dispatchEvent(error);
+    });
+    return once(et, 'error').then(function (args) {
+      var err = args[0];
+      assert.strictEqual(err, error);
+      assert.strictEqual(has(et.events, 'error'), false);
+    });
+  }
+
+  common.test.comment('Testing with browser built-in EventTarget');
+  allTests.push([
+    onceWithBrowserEventTarget(),
+    onceWithBrowserEventTargetError()
+  ]);
+}
+
+module.exports = Promise.all(allTests);
Index: frontend/node_modules/events/tests/index.js
===================================================================
--- frontend/node_modules/events/tests/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/events/tests/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,64 @@
+var test = require('tape');
+var functionsHaveNames = require('functions-have-names');
+var hasSymbols = require('has-symbols');
+
+require('./legacy-compat');
+var common = require('./common');
+
+// we do this to easily wrap each file in a mocha test
+// and also have browserify be able to statically analyze this file
+var orig_require = require;
+var require = function(file) {
+    test(file, function(t) {
+        // Store the tape object so tests can access it.
+        t.on('end', function () { delete common.test; });
+        common.test = t;
+
+        try {
+          var exp = orig_require(file);
+          if (exp && exp.then) {
+            exp.then(function () { t.end(); }, t.fail);
+            return;
+          }
+        } catch (err) {
+          t.fail(err);
+        }
+        t.end();
+    });
+};
+
+require('./add-listeners.js');
+require('./check-listener-leaks.js');
+require('./errors.js');
+require('./events-list.js');
+if (typeof Promise === 'function') {
+  require('./events-once.js');
+} else {
+  // Promise support is not available.
+  test('./events-once.js', { skip: true }, function () {});
+}
+require('./listener-count.js');
+require('./listeners-side-effects.js');
+require('./listeners.js');
+require('./max-listeners.js');
+if (functionsHaveNames()) {
+  require('./method-names.js');
+} else {
+  // Function.name is not supported in IE
+  test('./method-names.js', { skip: true }, function () {});
+}
+require('./modify-in-emit.js');
+require('./num-args.js');
+require('./once.js');
+require('./prepend.js');
+require('./set-max-listeners-side-effects.js');
+require('./special-event-names.js');
+require('./subclass.js');
+if (hasSymbols()) {
+  require('./symbols.js');
+} else {
+  // Symbol is not available.
+  test('./symbols.js', { skip: true }, function () {});
+}
+require('./remove-all-listeners.js');
+require('./remove-listeners.js');
Index: frontend/node_modules/events/tests/legacy-compat.js
===================================================================
--- frontend/node_modules/events/tests/legacy-compat.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/events/tests/legacy-compat.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,16 @@
+// sigh... life is hard
+if (!global.console) {
+    console = {}
+}
+
+var fns = ['log', 'error', 'trace'];
+for (var i=0 ; i<fns.length ; ++i) {
+    var fn = fns[i];
+    if (!console[fn]) {
+        console[fn] = function() {};
+    }
+}
+
+if (!Array.isArray) {
+    Array.isArray = require('isarray');
+}
Index: frontend/node_modules/events/tests/listener-count.js
===================================================================
--- frontend/node_modules/events/tests/listener-count.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/events/tests/listener-count.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,37 @@
+// 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.
+
+require('./common');
+var assert = require('assert');
+var EventEmitter = require('../');
+
+var emitter = new EventEmitter();
+emitter.on('foo', function() {});
+emitter.on('foo', function() {});
+emitter.on('baz', function() {});
+// Allow any type
+emitter.on(123, function() {});
+
+assert.strictEqual(EventEmitter.listenerCount(emitter, 'foo'), 2);
+assert.strictEqual(emitter.listenerCount('foo'), 2);
+assert.strictEqual(emitter.listenerCount('bar'), 0);
+assert.strictEqual(emitter.listenerCount('baz'), 1);
+assert.strictEqual(emitter.listenerCount(123), 1);
Index: frontend/node_modules/events/tests/listeners-side-effects.js
===================================================================
--- frontend/node_modules/events/tests/listeners-side-effects.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/events/tests/listeners-side-effects.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,56 @@
+// 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.
+
+require('./common');
+var assert = require('assert');
+
+var EventEmitter = require('../').EventEmitter;
+
+var e = new EventEmitter();
+var fl;  // foo listeners
+
+fl = e.listeners('foo');
+assert.ok(Array.isArray(fl));
+assert.strictEqual(fl.length, 0);
+if (Object.create) assert.ok(!(e._events instanceof Object));
+assert.strictEqual(Object.keys(e._events).length, 0);
+
+e.on('foo', assert.fail);
+fl = e.listeners('foo');
+assert.strictEqual(e._events.foo, assert.fail);
+assert.ok(Array.isArray(fl));
+assert.strictEqual(fl.length, 1);
+assert.strictEqual(fl[0], assert.fail);
+
+e.listeners('bar');
+
+e.on('foo', assert.ok);
+fl = e.listeners('foo');
+
+assert.ok(Array.isArray(e._events.foo));
+assert.strictEqual(e._events.foo.length, 2);
+assert.strictEqual(e._events.foo[0], assert.fail);
+assert.strictEqual(e._events.foo[1], assert.ok);
+
+assert.ok(Array.isArray(fl));
+assert.strictEqual(fl.length, 2);
+assert.strictEqual(fl[0], assert.fail);
+assert.strictEqual(fl[1], assert.ok);
Index: frontend/node_modules/events/tests/listeners.js
===================================================================
--- frontend/node_modules/events/tests/listeners.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/events/tests/listeners.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,168 @@
+// 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.
+
+require('./common');
+var assert = require('assert');
+var events = require('../');
+var util = require('util');
+
+function listener() {}
+function listener2() {}
+function listener3() {
+  return 0;
+}
+function listener4() {
+  return 1;
+}
+
+function TestStream() {}
+util.inherits(TestStream, events.EventEmitter);
+
+{
+  var ee = new events.EventEmitter();
+  ee.on('foo', listener);
+  var fooListeners = ee.listeners('foo');
+
+  var listeners = ee.listeners('foo');
+  assert.ok(Array.isArray(listeners));
+  assert.strictEqual(listeners.length, 1);
+  assert.strictEqual(listeners[0], listener);
+
+  ee.removeAllListeners('foo');
+  listeners = ee.listeners('foo');
+  assert.ok(Array.isArray(listeners));
+  assert.strictEqual(listeners.length, 0);
+
+  assert.ok(Array.isArray(fooListeners));
+  assert.strictEqual(fooListeners.length, 1);
+  assert.strictEqual(fooListeners[0], listener);
+}
+
+{
+  var ee = new events.EventEmitter();
+  ee.on('foo', listener);
+
+  var eeListenersCopy = ee.listeners('foo');
+  assert.ok(Array.isArray(eeListenersCopy));
+  assert.strictEqual(eeListenersCopy.length, 1);
+  assert.strictEqual(eeListenersCopy[0], listener);
+
+  var listeners = ee.listeners('foo');
+  assert.ok(Array.isArray(listeners));
+  assert.strictEqual(listeners.length, 1);
+  assert.strictEqual(listeners[0], listener);
+
+  eeListenersCopy.push(listener2);
+  listeners = ee.listeners('foo');
+  
+  assert.ok(Array.isArray(listeners));
+  assert.strictEqual(listeners.length, 1);
+  assert.strictEqual(listeners[0], listener);
+
+  assert.strictEqual(eeListenersCopy.length, 2);
+  assert.strictEqual(eeListenersCopy[0], listener);
+  assert.strictEqual(eeListenersCopy[1], listener2);
+}
+
+{
+  var ee = new events.EventEmitter();
+  ee.on('foo', listener);
+  var eeListenersCopy = ee.listeners('foo');
+  ee.on('foo', listener2);
+
+  var listeners = ee.listeners('foo');
+  assert.ok(Array.isArray(listeners));
+  assert.strictEqual(listeners.length, 2);
+  assert.strictEqual(listeners[0], listener);
+  assert.strictEqual(listeners[1], listener2);
+
+  assert.ok(Array.isArray(eeListenersCopy));
+  assert.strictEqual(eeListenersCopy.length, 1);
+  assert.strictEqual(eeListenersCopy[0], listener);
+}
+
+{
+  var ee = new events.EventEmitter();
+  ee.once('foo', listener);
+  var listeners = ee.listeners('foo');
+  assert.ok(Array.isArray(listeners));
+  assert.strictEqual(listeners.length, 1);
+  assert.strictEqual(listeners[0], listener);
+}
+
+{
+  var ee = new events.EventEmitter();
+  ee.on('foo', listener);
+  ee.once('foo', listener2);
+
+  var listeners = ee.listeners('foo');
+  assert.ok(Array.isArray(listeners));
+  assert.strictEqual(listeners.length, 2);
+  assert.strictEqual(listeners[0], listener);
+  assert.strictEqual(listeners[1], listener2);
+}
+
+{
+  var ee = new events.EventEmitter();
+  ee._events = undefined;
+  var listeners = ee.listeners('foo');
+  assert.ok(Array.isArray(listeners));
+  assert.strictEqual(listeners.length, 0);
+}
+
+{
+  var s = new TestStream();
+  var listeners = s.listeners('foo');
+  assert.ok(Array.isArray(listeners));
+  assert.strictEqual(listeners.length, 0);
+}
+
+
+{
+  var ee = new events.EventEmitter();
+  ee.on('foo', listener);
+  var wrappedListener = ee.rawListeners('foo');
+  assert.strictEqual(wrappedListener.length, 1);
+  assert.strictEqual(wrappedListener[0], listener);
+  assert.notStrictEqual(wrappedListener, ee.rawListeners('foo'));
+  ee.once('foo', listener);
+  var wrappedListeners = ee.rawListeners('foo');
+  assert.strictEqual(wrappedListeners.length, 2);
+  assert.strictEqual(wrappedListeners[0], listener);
+  assert.notStrictEqual(wrappedListeners[1], listener);
+  assert.strictEqual(wrappedListeners[1].listener, listener);
+  assert.notStrictEqual(wrappedListeners, ee.rawListeners('foo'));
+  ee.emit('foo');
+  assert.strictEqual(wrappedListeners.length, 2);
+  assert.strictEqual(wrappedListeners[1].listener, listener);
+}
+
+{
+  var ee = new events.EventEmitter();
+  ee.once('foo', listener3);
+  ee.on('foo', listener4);
+  var rawListeners = ee.rawListeners('foo');
+  assert.strictEqual(rawListeners.length, 2);
+  assert.strictEqual(rawListeners[0](), 0);
+  var rawListener = ee.rawListeners('foo');
+  assert.strictEqual(rawListener.length, 1);
+  assert.strictEqual(rawListener[0](), 1);
+}
Index: frontend/node_modules/events/tests/max-listeners.js
===================================================================
--- frontend/node_modules/events/tests/max-listeners.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/events/tests/max-listeners.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,47 @@
+// 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.
+
+var common = require('./common');
+var assert = require('assert');
+var events = require('../');
+var e = new events.EventEmitter();
+
+var hasDefineProperty = !!Object.defineProperty;
+try { Object.defineProperty({}, 'x', { value: 0 }); } catch (err) { hasDefineProperty = false }
+
+e.on('maxListeners', common.mustCall());
+
+// Should not corrupt the 'maxListeners' queue.
+e.setMaxListeners(42);
+
+var throwsObjs = [NaN, -1, 'and even this'];
+var maxError = /^RangeError: The value of "n" is out of range\. It must be a non-negative number\./;
+var defError = /^RangeError: The value of "defaultMaxListeners" is out of range\. It must be a non-negative number\./;
+
+for (var i = 0; i < throwsObjs.length; i++) {
+  var obj = throwsObjs[i];
+  assert.throws(function() { e.setMaxListeners(obj); }, maxError);
+  if (hasDefineProperty) {
+    assert.throws(function() { events.defaultMaxListeners = obj; }, defError);
+  }
+}
+
+e.emit('maxListeners');
Index: frontend/node_modules/events/tests/method-names.js
===================================================================
--- frontend/node_modules/events/tests/method-names.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/events/tests/method-names.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,35 @@
+// 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');
+var assert = require('assert');
+var events = require('../');
+
+var E = events.EventEmitter.prototype;
+assert.strictEqual(E.constructor.name, 'EventEmitter');
+assert.strictEqual(E.on, E.addListener);  // Same method.
+assert.strictEqual(E.off, E.removeListener);  // Same method.
+Object.getOwnPropertyNames(E).forEach(function(name) {
+  if (name === 'constructor' || name === 'on' || name === 'off') return;
+  if (typeof E[name] !== 'function') return;
+  assert.strictEqual(E[name].name, name);
+});
Index: frontend/node_modules/events/tests/modify-in-emit.js
===================================================================
--- frontend/node_modules/events/tests/modify-in-emit.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/events/tests/modify-in-emit.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,90 @@
+// 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.
+
+require('./common');
+var assert = require('assert');
+var events = require('../');
+
+var callbacks_called = [];
+
+var e = new events.EventEmitter();
+
+function callback1() {
+  callbacks_called.push('callback1');
+  e.on('foo', callback2);
+  e.on('foo', callback3);
+  e.removeListener('foo', callback1);
+}
+
+function callback2() {
+  callbacks_called.push('callback2');
+  e.removeListener('foo', callback2);
+}
+
+function callback3() {
+  callbacks_called.push('callback3');
+  e.removeListener('foo', callback3);
+}
+
+e.on('foo', callback1);
+assert.strictEqual(e.listeners('foo').length, 1);
+
+e.emit('foo');
+assert.strictEqual(e.listeners('foo').length, 2);
+assert.ok(Array.isArray(callbacks_called));
+assert.strictEqual(callbacks_called.length, 1);
+assert.strictEqual(callbacks_called[0], 'callback1');
+
+e.emit('foo');
+assert.strictEqual(e.listeners('foo').length, 0);
+assert.ok(Array.isArray(callbacks_called));
+assert.strictEqual(callbacks_called.length, 3);
+assert.strictEqual(callbacks_called[0], 'callback1');
+assert.strictEqual(callbacks_called[1], 'callback2');
+assert.strictEqual(callbacks_called[2], 'callback3');
+
+e.emit('foo');
+assert.strictEqual(e.listeners('foo').length, 0);
+assert.ok(Array.isArray(callbacks_called));
+assert.strictEqual(callbacks_called.length, 3);
+assert.strictEqual(callbacks_called[0], 'callback1');
+assert.strictEqual(callbacks_called[1], 'callback2');
+assert.strictEqual(callbacks_called[2], 'callback3');
+
+e.on('foo', callback1);
+e.on('foo', callback2);
+assert.strictEqual(e.listeners('foo').length, 2);
+e.removeAllListeners('foo');
+assert.strictEqual(e.listeners('foo').length, 0);
+
+// Verify that removing callbacks while in emit allows emits to propagate to
+// all listeners
+callbacks_called = [];
+
+e.on('foo', callback2);
+e.on('foo', callback3);
+assert.strictEqual(2, e.listeners('foo').length);
+e.emit('foo');
+assert.ok(Array.isArray(callbacks_called));
+assert.strictEqual(callbacks_called.length, 2);
+assert.strictEqual(callbacks_called[0], 'callback2');
+assert.strictEqual(callbacks_called[1], 'callback3');
+assert.strictEqual(0, e.listeners('foo').length);
Index: frontend/node_modules/events/tests/num-args.js
===================================================================
--- frontend/node_modules/events/tests/num-args.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/events/tests/num-args.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,60 @@
+// 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.
+
+require('./common');
+var assert = require('assert');
+var events = require('../');
+
+var e = new events.EventEmitter();
+var num_args_emitted = [];
+
+e.on('numArgs', function() {
+  var numArgs = arguments.length;
+  num_args_emitted.push(numArgs);
+});
+
+e.on('foo', function() {
+  num_args_emitted.push(arguments.length);
+});
+
+e.on('foo', function() {
+  num_args_emitted.push(arguments.length);
+});
+
+e.emit('numArgs');
+e.emit('numArgs', null);
+e.emit('numArgs', null, null);
+e.emit('numArgs', null, null, null);
+e.emit('numArgs', null, null, null, null);
+e.emit('numArgs', null, null, null, null, null);
+
+e.emit('foo', null, null, null, null);
+
+assert.ok(Array.isArray(num_args_emitted));
+assert.strictEqual(num_args_emitted.length, 8);
+assert.strictEqual(num_args_emitted[0], 0);
+assert.strictEqual(num_args_emitted[1], 1);
+assert.strictEqual(num_args_emitted[2], 2);
+assert.strictEqual(num_args_emitted[3], 3);
+assert.strictEqual(num_args_emitted[4], 4);
+assert.strictEqual(num_args_emitted[5], 5);
+assert.strictEqual(num_args_emitted[6], 4);
+assert.strictEqual(num_args_emitted[6], 4);
Index: frontend/node_modules/events/tests/once.js
===================================================================
--- frontend/node_modules/events/tests/once.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/events/tests/once.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,83 @@
+// 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.
+
+var common = require('./common');
+var assert = require('assert');
+var EventEmitter = require('../');
+
+var e = new EventEmitter();
+
+e.once('hello', common.mustCall());
+
+e.emit('hello', 'a', 'b');
+e.emit('hello', 'a', 'b');
+e.emit('hello', 'a', 'b');
+e.emit('hello', 'a', 'b');
+
+function remove() {
+  assert.fail('once->foo should not be emitted');
+}
+
+e.once('foo', remove);
+e.removeListener('foo', remove);
+e.emit('foo');
+
+e.once('e', common.mustCall(function() {
+  e.emit('e');
+}));
+
+e.once('e', common.mustCall());
+
+e.emit('e');
+
+// Verify that the listener must be a function
+assert.throws(function() {
+  var ee = new EventEmitter();
+
+  ee.once('foo', null);
+}, /^TypeError: The "listener" argument must be of type Function. Received type object$/);
+
+{
+  // once() has different code paths based on the number of arguments being
+  // emitted. Verify that all of the cases are covered.
+  var maxArgs = 4;
+
+  for (var i = 0; i <= maxArgs; ++i) {
+    var ee = new EventEmitter();
+    var args = ['foo'];
+
+    for (var j = 0; j < i; ++j)
+      args.push(j);
+
+    ee.once('foo', common.mustCall(function() {
+      var params = Array.prototype.slice.call(arguments);
+      var restArgs = args.slice(1);
+      assert.ok(Array.isArray(params));
+      assert.strictEqual(params.length, restArgs.length);
+      for (var index = 0; index < params.length; index++) {
+        var param = params[index];
+        assert.strictEqual(param, restArgs[index]);
+      }
+  	}));
+
+    EventEmitter.prototype.emit.apply(ee, args);
+  }
+}
Index: frontend/node_modules/events/tests/prepend.js
===================================================================
--- frontend/node_modules/events/tests/prepend.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/events/tests/prepend.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,31 @@
+'use strict';
+
+var common = require('./common');
+var EventEmitter = require('../');
+var assert = require('assert');
+
+var myEE = new EventEmitter();
+var m = 0;
+// This one comes last.
+myEE.on('foo', common.mustCall(function () {
+  assert.strictEqual(m, 2);
+}));
+
+// This one comes second.
+myEE.prependListener('foo', common.mustCall(function () {
+  assert.strictEqual(m++, 1);
+}));
+
+// This one comes first.
+myEE.prependOnceListener('foo',
+                         common.mustCall(function () {
+                           assert.strictEqual(m++, 0);
+                         }));
+
+myEE.emit('foo');
+
+// Verify that the listener must be a function
+assert.throws(function () {
+  var ee = new EventEmitter();
+  ee.prependOnceListener('foo', null);
+}, 'TypeError: The "listener" argument must be of type Function. Received type object');
Index: frontend/node_modules/events/tests/remove-all-listeners.js
===================================================================
--- frontend/node_modules/events/tests/remove-all-listeners.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/events/tests/remove-all-listeners.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,133 @@
+// 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.
+
+var common = require('./common');
+var assert = require('assert');
+var events = require('../');
+var test = require('tape');
+
+function expect(expected) {
+  var actual = [];
+  test.onFinish(function() {
+    var sortedActual = actual.sort();
+    var sortedExpected = expected.sort();
+    assert.strictEqual(sortedActual.length, sortedExpected.length);
+    for (var index = 0; index < sortedActual.length; index++) {
+      var value = sortedActual[index];
+      assert.strictEqual(value, sortedExpected[index]);
+    }
+  });
+  function listener(name) {
+    actual.push(name);
+  }
+  return common.mustCall(listener, expected.length);
+}
+
+{
+  var ee = new events.EventEmitter();
+  var noop = common.mustNotCall();
+  ee.on('foo', noop);
+  ee.on('bar', noop);
+  ee.on('baz', noop);
+  ee.on('baz', noop);
+  var fooListeners = ee.listeners('foo');
+  var barListeners = ee.listeners('bar');
+  var bazListeners = ee.listeners('baz');
+  ee.on('removeListener', expect(['bar', 'baz', 'baz']));
+  ee.removeAllListeners('bar');
+  ee.removeAllListeners('baz');
+
+  var listeners = ee.listeners('foo');
+  assert.ok(Array.isArray(listeners));
+  assert.strictEqual(listeners.length, 1);
+  assert.strictEqual(listeners[0], noop);
+
+  listeners = ee.listeners('bar');
+  assert.ok(Array.isArray(listeners));
+  assert.strictEqual(listeners.length, 0);
+  listeners = ee.listeners('baz');
+  assert.ok(Array.isArray(listeners));
+  assert.strictEqual(listeners.length, 0);
+  // After calling removeAllListeners(),
+  // the old listeners array should stay unchanged.
+  assert.strictEqual(fooListeners.length, 1);
+  assert.strictEqual(fooListeners[0], noop);
+  assert.strictEqual(barListeners.length, 1);
+  assert.strictEqual(barListeners[0], noop);
+  assert.strictEqual(bazListeners.length, 2);
+  assert.strictEqual(bazListeners[0], noop);
+  assert.strictEqual(bazListeners[1], noop);
+  // After calling removeAllListeners(),
+  // new listeners arrays is different from the old.
+  assert.notStrictEqual(ee.listeners('bar'), barListeners);
+  assert.notStrictEqual(ee.listeners('baz'), bazListeners);
+}
+
+{
+  var ee = new events.EventEmitter();
+  ee.on('foo', common.mustNotCall());
+  ee.on('bar', common.mustNotCall());
+  // Expect LIFO order
+  ee.on('removeListener', expect(['foo', 'bar', 'removeListener']));
+  ee.on('removeListener', expect(['foo', 'bar']));
+  ee.removeAllListeners();
+
+  var listeners = ee.listeners('foo');
+  assert.ok(Array.isArray(listeners));
+  assert.strictEqual(listeners.length, 0);
+  listeners = ee.listeners('bar');
+  assert.ok(Array.isArray(listeners));
+  assert.strictEqual(listeners.length, 0);
+}
+
+{
+  var ee = new events.EventEmitter();
+  ee.on('removeListener', common.mustNotCall());
+  // Check for regression where removeAllListeners() throws when
+  // there exists a 'removeListener' listener, but there exists
+  // no listeners for the provided event type.
+  assert.doesNotThrow(function () { ee.removeAllListeners(ee, 'foo') });
+}
+
+{
+  var ee = new events.EventEmitter();
+  var expectLength = 2;
+  ee.on('removeListener', function() {
+    assert.strictEqual(expectLength--, this.listeners('baz').length);
+  });
+  ee.on('baz', common.mustNotCall());
+  ee.on('baz', common.mustNotCall());
+  ee.on('baz', common.mustNotCall());
+  assert.strictEqual(ee.listeners('baz').length, expectLength + 1);
+  ee.removeAllListeners('baz');
+  assert.strictEqual(ee.listeners('baz').length, 0);
+}
+
+{
+  var ee = new events.EventEmitter();
+  assert.strictEqual(ee, ee.removeAllListeners());
+}
+
+{
+  var ee = new events.EventEmitter();
+  ee._events = undefined;
+  assert.strictEqual(ee, ee.removeAllListeners());
+}
Index: frontend/node_modules/events/tests/remove-listeners.js
===================================================================
--- frontend/node_modules/events/tests/remove-listeners.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/events/tests/remove-listeners.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,212 @@
+// 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.
+
+var common = require('./common');
+var assert = require('assert');
+var EventEmitter = require('../');
+
+var listener1 = function listener1() {};
+var listener2 = function listener2() {};
+
+{
+  var ee = new EventEmitter();
+  ee.on('hello', listener1);
+  ee.on('removeListener', common.mustCall(function(name, cb) {
+    assert.strictEqual(name, 'hello');
+    assert.strictEqual(cb, listener1);
+  }));
+  ee.removeListener('hello', listener1);
+  var listeners = ee.listeners('hello');
+  assert.ok(Array.isArray(listeners));
+  assert.strictEqual(listeners.length, 0);
+}
+
+{
+  var ee = new EventEmitter();
+  ee.on('hello', listener1);
+  ee.on('removeListener', common.mustNotCall());
+  ee.removeListener('hello', listener2);
+
+  var listeners = ee.listeners('hello');
+  assert.ok(Array.isArray(listeners));
+  assert.strictEqual(listeners.length, 1);
+  assert.strictEqual(listeners[0], listener1);
+}
+
+{
+  var ee = new EventEmitter();
+  ee.on('hello', listener1);
+  ee.on('hello', listener2);
+
+  var listeners;
+  ee.once('removeListener', common.mustCall(function(name, cb) {
+    assert.strictEqual(name, 'hello');
+    assert.strictEqual(cb, listener1);
+    listeners = ee.listeners('hello');
+    assert.ok(Array.isArray(listeners));
+    assert.strictEqual(listeners.length, 1);
+    assert.strictEqual(listeners[0], listener2);
+  }));
+  ee.removeListener('hello', listener1);
+  listeners = ee.listeners('hello');
+  assert.ok(Array.isArray(listeners));
+  assert.strictEqual(listeners.length, 1);
+  assert.strictEqual(listeners[0], listener2);
+  ee.once('removeListener', common.mustCall(function(name, cb) {
+    assert.strictEqual(name, 'hello');
+    assert.strictEqual(cb, listener2);
+    listeners = ee.listeners('hello');
+    assert.ok(Array.isArray(listeners));
+    assert.strictEqual(listeners.length, 0);
+  }));
+  ee.removeListener('hello', listener2);
+  listeners = ee.listeners('hello');
+  assert.ok(Array.isArray(listeners));
+  assert.strictEqual(listeners.length, 0);
+}
+
+{
+  var ee = new EventEmitter();
+
+  function remove1() {
+    assert.fail('remove1 should not have been called');
+  }
+
+  function remove2() {
+    assert.fail('remove2 should not have been called');
+  }
+
+  ee.on('removeListener', common.mustCall(function(name, cb) {
+    if (cb !== remove1) return;
+    this.removeListener('quux', remove2);
+    this.emit('quux');
+  }, 2));
+  ee.on('quux', remove1);
+  ee.on('quux', remove2);
+  ee.removeListener('quux', remove1);
+}
+
+{
+  var ee = new EventEmitter();
+  ee.on('hello', listener1);
+  ee.on('hello', listener2);
+
+  var listeners;
+  ee.once('removeListener', common.mustCall(function(name, cb) {
+    assert.strictEqual(name, 'hello');
+    assert.strictEqual(cb, listener1);
+    listeners = ee.listeners('hello');
+    assert.ok(Array.isArray(listeners));
+    assert.strictEqual(listeners.length, 1);
+    assert.strictEqual(listeners[0], listener2);
+    ee.once('removeListener', common.mustCall(function(name, cb) {
+      assert.strictEqual(name, 'hello');
+      assert.strictEqual(cb, listener2);
+      listeners = ee.listeners('hello');
+      assert.ok(Array.isArray(listeners));
+      assert.strictEqual(listeners.length, 0);
+    }));
+    ee.removeListener('hello', listener2);
+    listeners = ee.listeners('hello');
+    assert.ok(Array.isArray(listeners));
+    assert.strictEqual(listeners.length, 0);
+  }));
+  ee.removeListener('hello', listener1);
+  listeners = ee.listeners('hello');
+  assert.ok(Array.isArray(listeners));
+  assert.strictEqual(listeners.length, 0);
+}
+
+{
+  var ee = new EventEmitter();
+  var listener3 = common.mustCall(function() {
+    ee.removeListener('hello', listener4);
+  }, 2);
+  var listener4 = common.mustCall();
+
+  ee.on('hello', listener3);
+  ee.on('hello', listener4);
+
+  // listener4 will still be called although it is removed by listener 3.
+  ee.emit('hello');
+  // This is so because the interal listener array at time of emit
+  // was [listener3,listener4]
+
+  // Interal listener array [listener3]
+  ee.emit('hello');
+}
+
+{
+  var ee = new EventEmitter();
+
+  ee.once('hello', listener1);
+  ee.on('removeListener', common.mustCall(function(eventName, listener) {
+    assert.strictEqual(eventName, 'hello');
+    assert.strictEqual(listener, listener1);
+  }));
+  ee.emit('hello');
+}
+
+{
+  var ee = new EventEmitter();
+
+  assert.strictEqual(ee, ee.removeListener('foo', function() {}));
+}
+
+// Verify that the removed listener must be a function
+assert.throws(function() {
+  var ee = new EventEmitter();
+
+  ee.removeListener('foo', null);
+}, /^TypeError: The "listener" argument must be of type Function\. Received type object$/);
+
+{
+  var ee = new EventEmitter();
+  var listener = function() {};
+  ee._events = undefined;
+  var e = ee.removeListener('foo', listener);
+  assert.strictEqual(e, ee);
+}
+
+{
+  var ee = new EventEmitter();
+
+  ee.on('foo', listener1);
+  ee.on('foo', listener2);
+  var listeners = ee.listeners('foo');
+  assert.ok(Array.isArray(listeners));
+  assert.strictEqual(listeners.length, 2);
+  assert.strictEqual(listeners[0], listener1);
+  assert.strictEqual(listeners[1], listener2);
+
+  ee.removeListener('foo', listener1);
+  assert.strictEqual(ee._events.foo, listener2);
+
+  ee.on('foo', listener1);
+  listeners = ee.listeners('foo');
+  assert.ok(Array.isArray(listeners));
+  assert.strictEqual(listeners.length, 2);
+  assert.strictEqual(listeners[0], listener2);
+  assert.strictEqual(listeners[1], listener1);
+
+  ee.removeListener('foo', listener1);
+  assert.strictEqual(ee._events.foo, listener2);
+}
Index: frontend/node_modules/events/tests/set-max-listeners-side-effects.js
===================================================================
--- frontend/node_modules/events/tests/set-max-listeners-side-effects.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/events/tests/set-max-listeners-side-effects.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,31 @@
+// 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.
+
+require('./common');
+var assert = require('assert');
+var events = require('../');
+
+var e = new events.EventEmitter();
+
+if (Object.create) assert.ok(!(e._events instanceof Object));
+assert.strictEqual(Object.keys(e._events).length, 0);
+e.setMaxListeners(5);
+assert.strictEqual(Object.keys(e._events).length, 0);
Index: frontend/node_modules/events/tests/special-event-names.js
===================================================================
--- frontend/node_modules/events/tests/special-event-names.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/events/tests/special-event-names.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,45 @@
+'use strict';
+
+var common = require('./common');
+var EventEmitter = require('../');
+var assert = require('assert');
+
+var ee = new EventEmitter();
+var handler = function() {};
+
+assert.strictEqual(ee.eventNames().length, 0);
+
+assert.strictEqual(ee._events.hasOwnProperty, undefined);
+assert.strictEqual(ee._events.toString, undefined);
+
+ee.on('__defineGetter__', handler);
+ee.on('toString', handler);
+ee.on('__proto__', handler);
+
+assert.strictEqual(ee.eventNames()[0], '__defineGetter__');
+assert.strictEqual(ee.eventNames()[1], 'toString');
+
+assert.strictEqual(ee.listeners('__defineGetter__').length, 1);
+assert.strictEqual(ee.listeners('__defineGetter__')[0], handler);
+assert.strictEqual(ee.listeners('toString').length, 1);
+assert.strictEqual(ee.listeners('toString')[0], handler);
+
+// Only run __proto__ tests if that property can actually be set
+if ({ __proto__: 'ok' }.__proto__ === 'ok') {
+  assert.strictEqual(ee.eventNames().length, 3);
+  assert.strictEqual(ee.eventNames()[2], '__proto__');
+  assert.strictEqual(ee.listeners('__proto__').length, 1);
+  assert.strictEqual(ee.listeners('__proto__')[0], handler);
+
+  ee.on('__proto__', common.mustCall(function(val) {
+    assert.strictEqual(val, 1);
+  }));
+  ee.emit('__proto__', 1);
+
+  process.on('__proto__', common.mustCall(function(val) {
+    assert.strictEqual(val, 1);
+  }));
+  process.emit('__proto__', 1);
+} else {
+  console.log('# skipped __proto__')
+}
Index: frontend/node_modules/events/tests/subclass.js
===================================================================
--- frontend/node_modules/events/tests/subclass.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/events/tests/subclass.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,66 @@
+// 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.
+
+var common = require('./common');
+var test = require('tape');
+var assert = require('assert');
+var EventEmitter = require('../').EventEmitter;
+var util = require('util');
+
+util.inherits(MyEE, EventEmitter);
+
+function MyEE(cb) {
+  this.once(1, cb);
+  this.emit(1);
+  this.removeAllListeners();
+  EventEmitter.call(this);
+}
+
+var myee = new MyEE(common.mustCall());
+
+
+util.inherits(ErrorEE, EventEmitter);
+function ErrorEE() {
+  this.emit('error', new Error('blerg'));
+}
+
+assert.throws(function() {
+  new ErrorEE();
+}, /blerg/);
+
+test.onFinish(function() {
+  assert.ok(!(myee._events instanceof Object));
+  assert.strictEqual(Object.keys(myee._events).length, 0);
+});
+
+
+function MyEE2() {
+  EventEmitter.call(this);
+}
+
+MyEE2.prototype = new EventEmitter();
+
+var ee1 = new MyEE2();
+var ee2 = new MyEE2();
+
+ee1.on('x', function() {});
+
+assert.strictEqual(ee2.listenerCount('x'), 0);
Index: frontend/node_modules/events/tests/symbols.js
===================================================================
--- frontend/node_modules/events/tests/symbols.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/events/tests/symbols.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,25 @@
+'use strict';
+
+var common = require('./common');
+var EventEmitter = require('../');
+var assert = require('assert');
+
+var ee = new EventEmitter();
+var foo = Symbol('foo');
+var listener = common.mustCall();
+
+ee.on(foo, listener);
+assert.strictEqual(ee.listeners(foo).length, 1);
+assert.strictEqual(ee.listeners(foo)[0], listener);
+
+ee.emit(foo);
+
+ee.removeAllListeners();
+assert.strictEqual(ee.listeners(foo).length, 0);
+
+ee.on(foo, listener);
+assert.strictEqual(ee.listeners(foo).length, 1);
+assert.strictEqual(ee.listeners(foo)[0], listener);
+
+ee.removeListener(foo, listener);
+assert.strictEqual(ee.listeners(foo).length, 0);