diff --git a/.eslintrc.js b/.eslintrc.js
index 12dc42ec8..ad1662191 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -8,5 +8,24 @@ module.exports = {
     'ember/avoid-leaking-state-in-ember-objects': 'off',
 
     'ember-best-practices/require-dependent-keys': 'off',
+
+    'no-restricted-imports': [
+      'error',
+      {
+        paths: [
+          {
+            name: '@ember/object',
+            importNames: ['observer'],
+            message: 'For compatibility, use `import { observer } from "-private/utils/observer"`',
+          },
+          {
+            name: '@ember/object/observers',
+            importNames: ['addObserver', 'removeObserver'],
+            message:
+              'For compatibility, use `import { addObserver, removeObserver } from "-private/utils/observer"`',
+          },
+        ],
+      },
+    ],
   },
 };
diff --git a/addon/-private/collapse-tree.js b/addon/-private/collapse-tree.js
index 098cae318..daa3724e2 100644
--- a/addon/-private/collapse-tree.js
+++ b/addon/-private/collapse-tree.js
@@ -3,7 +3,7 @@ import EmberArray, { A as emberA, isArray } from '@ember/array';
 import { assert, warn } from '@ember/debug';
 
 import { computed } from '@ember/object';
-import { addObserver } from '@ember/object/observers';
+import { addObserver } from './utils/observer';
 
 import { objectAt } from './utils/array';
 import { notifyPropertyChange } from './utils/ember';
@@ -758,7 +758,7 @@ export default EmberObject.extend(EmberArray, {
   init() {
     this._super(...arguments);
 
-    // Whenever the root node's length changes we need to propogate the change to
+    // Whenever the root node's length changes we need to propagate the change to
     // users of the tree, and since the tree is meant to work like an array we should
     // trigger a change on the `[]` key as well.
     addObserver(this, 'root.length', () => notifyPropertyChange(this, '[]'));
diff --git a/addon/-private/column-tree.js b/addon/-private/column-tree.js
index 22e2ba6a9..f6d488ad4 100644
--- a/addon/-private/column-tree.js
+++ b/addon/-private/column-tree.js
@@ -1,6 +1,6 @@
 /* eslint-disable getter-return */
 import EmberObject, { get, set } from '@ember/object';
-import { addObserver, removeObserver } from '@ember/object/observers';
+import { addObserver, removeObserver } from './utils/observer';
 import { A as emberA } from '@ember/array';
 import { DEBUG } from '@glimmer/env';
 
@@ -172,7 +172,7 @@ const ColumnTreeNode = EmberObject.extend({
       meta.endReorder = (...args) => tree.endReorder(this, ...args);
 
       // Changes to the value directly should properly update all computeds on this
-      // node, but we need to manually propogate changes upwards to notify any other
+      // node, but we need to manually propagate changes upwards to notify any other
       // watchers
       this._notifyMaxChildDepth = () => notifyPropertyChange(parent, 'maxChildDepth');
       this._notifyLeaves = () => notifyPropertyChange(parent, 'leaves');
diff --git a/addon/-private/utils/computed.js b/addon/-private/utils/computed.js
index c0c61da94..e51549ac4 100644
--- a/addon/-private/utils/computed.js
+++ b/addon/-private/utils/computed.js
@@ -1,4 +1,5 @@
-import EmberObject, { defineProperty, computed, observer } from '@ember/object';
+import EmberObject, { defineProperty, computed } from '@ember/object';
+import { observer } from './observer';
 import { alias } from '@ember/object/computed';
 
 const PROPERTIES = new WeakMap();
diff --git a/addon/-private/utils/observer.js b/addon/-private/utils/observer.js
new file mode 100644
index 000000000..42a48b25d
--- /dev/null
+++ b/addon/-private/utils/observer.js
@@ -0,0 +1,64 @@
+import { gte } from 'ember-compatibility-helpers';
+import { assert } from '@ember/debug';
+
+// eslint-disable-next-line no-restricted-imports
+import { observer as emberObserver } from '@ember/object';
+
+// eslint-disable-next-line no-restricted-imports
+import {
+  addObserver as emberAddObserver,
+  removeObserver as emberRemoveObserver,
+} from '@ember/object/observers';
+
+const USE_ASYNC_OBSERVERS = gte('3.13.0');
+
+function asyncObserver(...args) {
+  let fn = args.pop();
+  let dependentKeys = args;
+  let sync = false;
+
+  return emberObserver({ dependentKeys, fn, sync });
+}
+
+function asyncAddObserver(...args) {
+  let obj, path, target, method;
+  let sync = false;
+  obj = args[0];
+  path = args[1];
+  assert(
+    `Expected 3 or 4 args for addObserver, got ${args.length}`,
+    args.length === 3 || args.length === 4
+  );
+  if (args.length === 3) {
+    target = null;
+    method = args[2];
+  } else if (args.length === 4) {
+    target = args[2];
+    method = args[3];
+  }
+
+  return emberAddObserver(obj, path, target, method, sync);
+}
+
+function asyncRemoveObserver(...args) {
+  let obj, path, target, method;
+  let sync = false;
+  obj = args[0];
+  path = args[1];
+  assert(
+    `Expected 3 or 4 args for addObserver, got ${args.length}`,
+    args.length === 3 || args.length === 4
+  );
+  if (args.length === 3) {
+    target = null;
+    method = args[2];
+  } else {
+    target = args[2];
+    method = args[3];
+  }
+  return emberRemoveObserver(obj, path, target, method, sync);
+}
+
+export const observer = USE_ASYNC_OBSERVERS ? asyncObserver : emberObserver;
+export const addObserver = USE_ASYNC_OBSERVERS ? asyncAddObserver : emberAddObserver;
+export const removeObserver = emberRemoveObserver ? asyncRemoveObserver : emberRemoveObserver;
diff --git a/addon/components/-private/base-table-cell.js b/addon/components/-private/base-table-cell.js
index 75a4a9ecd..da3b4788f 100644
--- a/addon/components/-private/base-table-cell.js
+++ b/addon/components/-private/base-table-cell.js
@@ -1,7 +1,8 @@
 import Component from '@ember/component';
 import { equal } from '@ember/object/computed';
-import { observer, computed } from '@ember/object';
+import { observer } from '../../-private/utils/observer';
 import { scheduleOnce } from '@ember/runloop';
+import { computed } from '@ember/object';
 
 export default Component.extend({
   // Provided by subclasses
diff --git a/addon/components/ember-tbody/component.js b/addon/components/ember-tbody/component.js
index 2b669e28a..edeed3205 100644
--- a/addon/components/ember-tbody/component.js
+++ b/addon/components/ember-tbody/component.js
@@ -1,6 +1,7 @@
 import Component from '@ember/component';
 
-import { computed, observer } from '@ember/object';
+import { computed } from '@ember/object';
+import { observer } from '../../-private/utils/observer';
 import { bool, readOnly, or } from '@ember/object/computed';
 
 import { SUPPORTS_INVERSE_BLOCK } from 'ember-compatibility-helpers';
diff --git a/addon/components/ember-thead/component.js b/addon/components/ember-thead/component.js
index 77da5e63b..02672f779 100644
--- a/addon/components/ember-thead/component.js
+++ b/addon/components/ember-thead/component.js
@@ -3,6 +3,7 @@ import Component from '@ember/component';
 import { bind } from '@ember/runloop';
 import { A as emberA } from '@ember/array';
 import defaultTo from '../../-private/utils/default-to';
+import { addObserver } from '../../-private/utils/observer';
 import { computed } from '@ember/object';
 import { notEmpty, or, readOnly } from '@ember/object/computed';
 
@@ -213,20 +214,20 @@ export default Component.extend({
     this._updateApi();
     this._updateColumnTree();
 
-    this.addObserver('sorts', this._updateApi);
-    this.addObserver('sortFunction', this._updateApi);
-    this.addObserver('reorderFunction', this._updateApi);
+    addObserver(this, 'sorts', this._updateApi);
+    addObserver(this, 'sortFunction', this._updateApi);
+    addObserver(this, 'reorderFunction', this._updateApi);
 
-    this.addObserver('sorts', this._updateColumnTree);
-    this.addObserver('columns.[]', this._onColumnsChange);
-    this.addObserver('fillMode', this._updateColumnTree);
-    this.addObserver('fillColumnIndex', this._updateColumnTree);
-    this.addObserver('resizeMode', this._updateColumnTree);
-    this.addObserver('widthConstraint', this._updateColumnTree);
+    addObserver(this, 'sorts', this._updateColumnTree);
+    addObserver(this, 'columns.[]', this._onColumnsChange);
+    addObserver(this, 'fillMode', this._updateColumnTree);
+    addObserver(this, 'fillColumnIndex', this._updateColumnTree);
+    addObserver(this, 'resizeMode', this._updateColumnTree);
+    addObserver(this, 'widthConstraint', this._updateColumnTree);
 
-    this.addObserver('enableSort', this._updateColumnTree);
-    this.addObserver('enableResize', this._updateColumnTree);
-    this.addObserver('enableReorder', this._updateColumnTree);
+    addObserver(this, 'enableSort', this._updateColumnTree);
+    addObserver(this, 'enableResize', this._updateColumnTree);
+    addObserver(this, 'enableReorder', this._updateColumnTree);
   },
 
   _updateApi() {
diff --git a/config/ember-try.js b/config/ember-try.js
index 082484905..7d82658f7 100644
--- a/config/ember-try.js
+++ b/config/ember-try.js
@@ -167,9 +167,6 @@ module.exports = function() {
         },
         {
           name: 'ember-release',
-          env: {
-            SKIP_REORDERING_TESTS: true,
-          },
           npm: {
             devDependencies: {
               'ember-source': urls[0],
@@ -179,9 +176,6 @@ module.exports = function() {
         },
         {
           name: 'ember-beta',
-          env: {
-            SKIP_REORDERING_TESTS: true,
-          },
           npm: {
             devDependencies: {
               'ember-source': urls[1],
@@ -191,9 +185,6 @@ module.exports = function() {
         },
         {
           name: 'ember-canary',
-          env: {
-            SKIP_REORDERING_TESTS: true,
-          },
           npm: {
             devDependencies: {
               'ember-source': urls[2],
diff --git a/tests/dummy/config/environment.js b/tests/dummy/config/environment.js
index 9cb2bfb95..b448c14df 100644
--- a/tests/dummy/config/environment.js
+++ b/tests/dummy/config/environment.js
@@ -16,7 +16,6 @@ module.exports = function(environment) {
     fastboot: {
       hostWhitelist: [/^localhost:\d+$/],
     },
-    skipReorderingTests: process.env.SKIP_REORDERING_TESTS,
     EmberENV: {
       FEATURES: {
         // Here you can enable experimental features on an ember canary build
diff --git a/tests/integration/components/headers/reorder-test.js b/tests/integration/components/headers/reorder-test.js
index 901a85bb1..4cb21d6ee 100644
--- a/tests/integration/components/headers/reorder-test.js
+++ b/tests/integration/components/headers/reorder-test.js
@@ -9,7 +9,6 @@ import { getScale } from 'ember-table/test-support/helpers/element';
 
 import TablePage from 'ember-table/test-support/pages/ember-table';
 import { toBase26 } from 'dummy/utils/base-26';
-import config from 'dummy/config/environment';
 
 const table = new TablePage();
 
@@ -46,13 +45,6 @@ async function reorderToRightEdge(column, edgeOffset = 0) {
 }
 
 module('Integration | headers | reorder', function() {
-  if (config.skipReorderingTests) {
-    skip('Skipping column reordering tests, see https://github.com/Addepar/ember-table/issues/775', async function(assert) {
-      assert.ok(true, 'Skipping column reordering tests');
-    });
-    return;
-  }
-
   componentModule('reordering', function() {
     test('standard columns', async function(assert) {
       await generateTable(this);
diff --git a/tests/integration/components/selection-test.js b/tests/integration/components/selection-test.js
index 3dd430e6d..d6e64432d 100644
--- a/tests/integration/components/selection-test.js
+++ b/tests/integration/components/selection-test.js
@@ -585,7 +585,7 @@ module('Integration | selection', () => {
         let rows = generateRows(1, 1);
         await generateTable(this, { rows });
 
-        this.set('selection', [...rows, { fakeRow: true }]);
+        run(() => this.set('selection', [...rows, { fakeRow: true }]));
         assert.ok(true, 'after setting bad selection, no error');
         assert.ok(table.validateSelected(0), 'First row is selected');
 
diff --git a/tests/unit/-private/collapse-tree-test.js b/tests/unit/-private/collapse-tree-test.js
index 98ea7c493..ac6da2e0f 100644
--- a/tests/unit/-private/collapse-tree-test.js
+++ b/tests/unit/-private/collapse-tree-test.js
@@ -2,6 +2,7 @@ import { module, test } from 'qunit';
 import { A as emberA } from '@ember/array';
 import { get, set } from '@ember/object';
 import { run } from '@ember/runloop';
+import { settled } from '@ember/test-helpers';
 
 import CollapseTree from 'ember-table/-private/collapse-tree';
 
@@ -235,7 +236,7 @@ module('Unit | Private | CollapseTree', function(hooks) {
     }
   });
 
-  test('can collapse nodes', function(assert) {
+  test('can collapse nodes', async function(assert) {
     let rows = generateTree([0, [1, [2, 3], 4, [5, 6]]]);
     tree = CollapseTree.create({
       rows,
@@ -245,31 +246,53 @@ module('Unit | Private | CollapseTree', function(hooks) {
     });
 
     set(rows[0].children[0], 'isCollapsed', true);
+    await settled();
 
     let expectedValue = [0, 1, 4, 5, 6];
     let expectedDepth = [0, 1, 1, 2, 2];
 
     assert.equal(get(tree, 'length'), 5);
 
-    for (let i = 0; i < 5; i++) {
-      assert.equal(tree.objectAt(i).value, expectedValue[i]);
-      assert.equal(metaFor(tree.objectAt(i)).get('depth'), expectedDepth[i]);
+    for (let i = 0; i < expectedValue.length; i++) {
+      assert.equal(
+        tree.objectAt(i).value,
+        expectedValue[i],
+        `after collapsing rows[0].children[0], correct tree value at ${i}`
+      );
+      assert.equal(
+        metaFor(tree.objectAt(i)).get('depth'),
+        expectedDepth[i],
+        `after collapsing rows[0].chilrden[0], correct depth at ${i}`
+      );
     }
 
     set(rows[0].children[0], 'isCollapsed', false);
+    await settled();
 
     expectedValue = [0, 1, 2, 3, 4, 5, 6];
     expectedDepth = [0, 1, 2, 2, 1, 2, 2];
 
-    assert.equal(get(tree, 'length'), 7);
+    assert.equal(
+      get(tree, 'length'),
+      7,
+      'after un-collapsing rows[0].children[0], tree length is correct'
+    );
 
-    for (let i = 0; i < 5; i++) {
-      assert.equal(tree.objectAt(i).value, expectedValue[i]);
-      assert.equal(metaFor(tree.objectAt(i)).get('depth'), expectedDepth[i]);
+    for (let i = 0; i < expectedValue.length; i++) {
+      assert.equal(
+        tree.objectAt(i).value,
+        expectedValue[i],
+        `after un-collapsing rows[0].children[0], correct value at ${i}`
+      );
+      assert.equal(
+        metaFor(tree.objectAt(i)).get('depth'),
+        expectedDepth[i],
+        `after un-collapsing rows[0].children[0], correct depth at ${i}`
+      );
     }
   });
 
-  test('can collapse nodes without modifying underlying data structure', function(assert) {
+  test('can collapse nodes without modifying underlying data structure', async function(assert) {
     let rows = generateTree([0, [1, [2, 3], 4, [5, 6]]]);
     tree = CollapseTree.create({
       rows,
@@ -279,6 +302,7 @@ module('Unit | Private | CollapseTree', function(hooks) {
     });
 
     metaFor(tree.objectAt(1)).toggleCollapse();
+    await settled();
 
     assert.equal(rows[0].children[0].isCollapsed, undefined);
 
@@ -287,12 +311,13 @@ module('Unit | Private | CollapseTree', function(hooks) {
 
     assert.equal(get(tree, 'length'), 5);
 
-    for (let i = 0; i < 5; i++) {
+    for (let i = 0; i < expectedValue.length; i++) {
       assert.equal(tree.objectAt(i).value, expectedValue[i]);
       assert.equal(metaFor(tree.objectAt(i)).get('depth'), expectedDepth[i]);
     }
 
     metaFor(tree.objectAt(1)).toggleCollapse();
+    await settled();
 
     assert.equal(rows[0].children[0].isCollapsed, undefined);
 
@@ -301,45 +326,47 @@ module('Unit | Private | CollapseTree', function(hooks) {
 
     assert.equal(get(tree, 'length'), 7);
 
-    for (let i = 0; i < 5; i++) {
+    for (let i = 0; i < expectedValue.length; i++) {
       assert.equal(tree.objectAt(i).value, expectedValue[i]);
       assert.equal(metaFor(tree.objectAt(i)).get('depth'), expectedDepth[i]);
     }
   });
 
-  test('can disable collapse', function(assert) {
+  test('can disable collapse', async function(assert) {
     let rows = generateTree([0, [1, [2, 3], 4, [5, 6]]]);
     tree = CollapseTree.create({ rows, rowMetaCache, enableTree: true });
 
     assert.equal(metaFor(tree.objectAt(1)).get('canCollapse'), false, 'collapse is disabled');
 
     metaFor(tree.objectAt(1)).toggleCollapse();
+    await settled();
 
     let expectedValue = [0, 1, 2, 3, 4, 5, 6];
     let expectedDepth = [0, 1, 2, 2, 1, 2, 2];
 
     assert.equal(get(tree, 'length'), 7);
 
-    for (let i = 0; i < 7; i++) {
+    for (let i = 0; i < expectedValue.length; i++) {
       assert.equal(tree.objectAt(i).value, expectedValue[i]);
       assert.equal(metaFor(tree.objectAt(i)).get('depth'), expectedDepth[i]);
     }
 
     tree.set('enableCollapse', true);
     metaFor(tree.objectAt(1)).toggleCollapse();
+    await settled();
 
     expectedValue = [0, 1, 4, 5, 6];
     expectedDepth = [0, 1, 1, 2, 2];
 
     assert.equal(get(tree, 'length'), 5);
 
-    for (let i = 0; i < 5; i++) {
+    for (let i = 0; i < expectedValue.length; i++) {
       assert.equal(tree.objectAt(i).value, expectedValue[i]);
       assert.equal(metaFor(tree.objectAt(i)).get('depth'), expectedDepth[i]);
     }
   });
 
-  test('can disable collapse at a row level', function(assert) {
+  test('can disable collapse at a row level', async function(assert) {
     let rows = generateTree([0, [1, [2, 3], 4, [5, 6]]]);
     tree = CollapseTree.create({ rows, rowMetaCache, enableTree: true });
     let row4Meta = metaFor(tree.objectAt(4));
@@ -354,18 +381,19 @@ module('Unit | Private | CollapseTree', function(hooks) {
 
     assert.equal(get(tree, 'length'), 7);
 
-    for (let i = 0; i < 7; i++) {
+    for (let i = 0; i < expectedValue.length; i++) {
       assert.equal(tree.objectAt(i).value, expectedValue[i]);
       assert.equal(metaFor(tree.objectAt(i)).get('depth'), expectedDepth[i]);
     }
 
     row4Meta.set('_rowValue.disableCollapse', true);
+    await settled();
 
     // we can no longer collapse the tree at this row
     assert.equal(get(row4Meta, 'canCollapse'), false);
     // but the tree remains unchanged other than the ability to collapse
     assert.equal(get(tree, 'length'), 7);
-    for (let i = 0; i < 7; i++) {
+    for (let i = 0; i < expectedValue.length; i++) {
       assert.equal(tree.objectAt(i).value, expectedValue[i]);
       assert.equal(metaFor(tree.objectAt(i)).get('depth'), expectedDepth[i]);
     }
@@ -383,7 +411,7 @@ module('Unit | Private | CollapseTree', function(hooks) {
 
     assert.equal(get(tree, 'length'), 8);
 
-    for (let i = 0; i < 8; i++) {
+    for (let i = 0; i < expectedDepth.length; i++) {
       assert.equal(tree.objectAt(i).value, i);
       assert.equal(metaFor(tree.objectAt(i)).get('depth'), expectedDepth[i]);
     }
@@ -401,7 +429,7 @@ module('Unit | Private | CollapseTree', function(hooks) {
 
     assert.equal(get(tree, 'length'), 7);
 
-    for (let i = 0; i < 7; i++) {
+    for (let i = 0; i < expectedDepth.length; i++) {
       assert.equal(tree.objectAt(i).value, i);
       assert.equal(metaFor(tree.objectAt(i)).get('depth'), expectedDepth[i]);
     }
@@ -418,14 +446,15 @@ module('Unit | Private | CollapseTree', function(hooks) {
     });
   });
 
-  test('can add child to leaf node', function(assert) {
+  test('can add child to leaf node', async function(assert) {
     let rows = [{ label: 'A', children: emberA([]) }, { label: 'B', children: emberA([]) }];
     tree = CollapseTree.create({ rows, rowMetaCache, enableTree: true });
 
-    run(() => {
-      assert.equal(tree.get('length'), 2, 'tree starts out with length 2');
-      rows[0].children.pushObject({ label: 'C', children: [] });
-      assert.equal(tree.get('length'), 3, 'adding a child to a leaf node increases length');
-    });
+    assert.equal(tree.get('length'), 2, 'tree starts out with length 2');
+
+    rows[0].children.pushObject({ label: 'C', children: [] });
+    await settled();
+
+    assert.equal(tree.get('length'), 3, 'adding a child to a leaf node increases length');
   });
 });
diff --git a/yarn.lock b/yarn.lock
index 6dd463816..6ab97be46 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -323,7 +323,7 @@
   resolved "https://registry.npmjs.org/@babel/parser/-/parser-7.6.0.tgz#3e05d0647432a8326cb28d0de03895ae5a57f39b"
   integrity sha512-+o2q111WEx4srBs7L9eJmcwi655eD8sXniLqMB93TBK9GrNzGrxDWSjiqz2hLU0Ha8MTXFIP0yd9fNdP+m43ZQ==
 
-"@babel/parser@^7.3.4", "@babel/parser@^7.4.5", "@babel/parser@^7.6.3", "@babel/parser@^7.6.4":
+"@babel/parser@^7.3.4", "@babel/parser@^7.6.3", "@babel/parser@^7.6.4":
   version "7.6.4"
   resolved "https://registry.npmjs.org/@babel/parser/-/parser-7.6.4.tgz#cb9b36a7482110282d5cb6dd424ec9262b473d81"
   integrity sha512-D8RHPW5qd0Vbyo3qb+YjO5nvUVRTXFLQ/FsDxJU2Nqz4uB5EnUN0ZQSEYpvTIbRuttig1XbHWU5oMeQwQSAA+A==
@@ -475,7 +475,7 @@
   dependencies:
     "@babel/helper-plugin-utils" "^7.0.0"
 
-"@babel/plugin-transform-block-scoping@^7.4.4", "@babel/plugin-transform-block-scoping@^7.5.5":
+"@babel/plugin-transform-block-scoping@^7.5.5":
   version "7.6.3"
   resolved "https://registry.npmjs.org/@babel/plugin-transform-block-scoping/-/plugin-transform-block-scoping-7.6.3.tgz#6e854e51fbbaa84351b15d4ddafe342f3a5d542a"
   integrity sha512-7hvrg75dubcO3ZI2rjYTzUrEuh1E9IyDEhhB6qfcooxhDA33xx2MasuLVgdxzcP6R/lipAC6n9ub9maNW6RKdw==
@@ -622,13 +622,6 @@
   dependencies:
     "@babel/helper-plugin-utils" "^7.0.0"
 
-"@babel/plugin-transform-object-assign@^7.2.0":
-  version "7.2.0"
-  resolved "https://registry.npmjs.org/@babel/plugin-transform-object-assign/-/plugin-transform-object-assign-7.2.0.tgz#6fdeea42be17040f119e38e23ea0f49f31968bde"
-  integrity sha512-nmE55cZBPFgUktbF2OuoZgPRadfxosLOpSgzEPYotKSls9J4pEPcembi8r78RU37Rph6UApCpNmsQA4QMWK9Ng==
-  dependencies:
-    "@babel/helper-plugin-utils" "^7.0.0"
-
 "@babel/plugin-transform-object-super@^7.5.5":
   version "7.5.5"
   resolved "https://registry.npmjs.org/@babel/plugin-transform-object-super/-/plugin-transform-object-super-7.5.5.tgz#c70021df834073c65eb613b8679cc4a381d1a9f9"
@@ -826,7 +819,7 @@
     globals "^11.1.0"
     lodash "^4.17.13"
 
-"@babel/traverse@^7.1.6", "@babel/traverse@^7.2.4", "@babel/traverse@^7.3.4", "@babel/traverse@^7.4.5", "@babel/traverse@^7.6.2", "@babel/traverse@^7.6.3":
+"@babel/traverse@^7.1.6", "@babel/traverse@^7.2.4", "@babel/traverse@^7.3.4", "@babel/traverse@^7.6.2", "@babel/traverse@^7.6.3":
   version "7.6.3"
   resolved "https://registry.npmjs.org/@babel/traverse/-/traverse-7.6.3.tgz#66d7dba146b086703c0fb10dd588b7364cec47f9"
   integrity sha512-unn7P4LGsijIxaAJo/wpoU11zN+2IaClkQAxcJWBNCMS6cmVh802IyLHNkAjQ0iYnRS3nnxk5O3fuXW28IMxTw==
@@ -1957,11 +1950,6 @@ assign-symbols@^1.0.0:
   resolved "https://registry.npmjs.org/assign-symbols/-/assign-symbols-1.0.0.tgz#59667f41fadd4f20ccbc2bb96b8d4f7f78ec0367"
   integrity sha1-WWZ/QfrdTyDMvCu5a41Pf3jsA2c=
 
-ast-types@0.13.2:
-  version "0.13.2"
-  resolved "https://registry.npmjs.org/ast-types/-/ast-types-0.13.2.tgz#df39b677a911a83f3a049644fb74fdded23cea48"
-  integrity sha512-uWMHxJxtfj/1oZClOxDEV1sQ1HCDkA4MG8Gr69KKeBjEVH0R84WlejZ0y2DcwyBlpAEMltmVYkVgqfLFb2oyiA==
-
 ast-types@0.9.6:
   version "0.9.6"
   resolved "https://registry.npmjs.org/ast-types/-/ast-types-0.9.6.tgz#102c9e9e9005d3e7e3829bf0c4fa24ee862ee9b9"
@@ -2307,7 +2295,7 @@ babel-plugin-debug-macros@^0.2.0, babel-plugin-debug-macros@^0.2.0-beta.6:
   dependencies:
     semver "^5.3.0"
 
-babel-plugin-debug-macros@^0.3.0, babel-plugin-debug-macros@^0.3.2, babel-plugin-debug-macros@^0.3.3:
+babel-plugin-debug-macros@^0.3.0, babel-plugin-debug-macros@^0.3.2:
   version "0.3.3"
   resolved "https://registry.npmjs.org/babel-plugin-debug-macros/-/babel-plugin-debug-macros-0.3.3.tgz#29c3449d663f61c7385f5b8c72d8015b069a5cb7"
   integrity sha512-E+NI8TKpxJDBbVkdWkwHrKgJi696mnRL8XYrOPYw82veNHPDORM9WIQifl6TpIo8PNy2tU2skPqbfkmHXrHKQA==
@@ -6202,15 +6190,6 @@ ember-router-generator@^1.2.3:
   dependencies:
     recast "^0.11.3"
 
-ember-router-generator@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.npmjs.org/ember-router-generator/-/ember-router-generator-2.0.0.tgz#d04abfed4ba8b42d166477bbce47fccc672dbde0"
-  integrity sha512-89oVHVJwmLDvGvAUWgS87KpBoRhy3aZ6U0Ql6HOmU4TrPkyaa8pM0W81wj9cIwjYprcQtN9EwzZMHnq46+oUyw==
-  dependencies:
-    "@babel/parser" "^7.4.5"
-    "@babel/traverse" "^7.4.5"
-    recast "^0.18.1"
-
 ember-router-scroll@^1.0.0:
   version "1.3.3"
   resolved "https://registry.npmjs.org/ember-router-scroll/-/ember-router-scroll-1.3.3.tgz#411991a671bd970497f5ce757baa627e850ae6e0"
@@ -6234,18 +6213,11 @@ ember-source-channel-url@^1.0.1:
   dependencies:
     got "^8.0.1"
 
-ember-source@~3.13:
-  version "3.13.3"
-  resolved "https://registry.npmjs.org/ember-source/-/ember-source-3.13.3.tgz#65794f79dec0512d833332575f13c77f9ccae2a1"
-  integrity sha512-aDmzAwpCa4H6ozd+RbsQs9/Pfo4wbnDVe9eb2D05PH9W6zRpiUa+pTluJsUFDfbi+jYGPQnjty2U/UQYBayFvg==
+ember-source@~3.12:
+  version "3.12.0"
+  resolved "https://registry.npmjs.org/ember-source/-/ember-source-3.12.0.tgz#92f72894836d4497e704901c1d061c61b066bddf"
+  integrity sha512-4iA2BgYmNLWysifLyt2LCQgU9ux/NiTR/MT7KTt9HUyTDJyivcdyKNtfrUQst/1InUvn+MxuQ0ZsbQICJkX6yA==
   dependencies:
-    "@babel/helper-module-imports" "^7.0.0"
-    "@babel/plugin-transform-block-scoping" "^7.4.4"
-    "@babel/plugin-transform-object-assign" "^7.2.0"
-    "@ember/edition-utils" "^1.1.1"
-    babel-plugin-debug-macros "^0.3.3"
-    babel-plugin-filter-imports "^3.0.0"
-    broccoli-concat "^3.7.3"
     broccoli-funnel "^2.0.2"
     broccoli-merge-trees "^3.0.2"
     chalk "^2.4.2"
@@ -6256,11 +6228,10 @@ ember-source@~3.13:
     ember-cli-path-utils "^1.0.0"
     ember-cli-string-utils "^1.1.0"
     ember-cli-version-checker "^3.1.3"
-    ember-router-generator "^2.0.0"
+    ember-router-generator "^1.2.3"
     inflection "^1.12.0"
     jquery "^3.4.1"
     resolve "^1.11.1"
-    silent-error "^1.1.1"
 
 ember-svg-jar@^1.2.2:
   version "1.2.2"
@@ -6917,7 +6888,7 @@ esprima@^3.1.3, esprima@~3.1.0:
   resolved "https://registry.npmjs.org/esprima/-/esprima-3.1.3.tgz#fdca51cee6133895e3c88d535ce49dbff62a4633"
   integrity sha1-/cpRzuYTOJXjyI1TXOSdv/YqRjM=
 
-esprima@^4.0.0, esprima@~4.0.0:
+esprima@^4.0.0:
   version "4.0.1"
   resolved "https://registry.npmjs.org/esprima/-/esprima-4.0.1.tgz#13b04cdb3e6c5d19df91ab6987a8695619b0aa71"
   integrity sha512-eGuFFw7Upda+g4p+QHvnW0RyTX/SVeJBDM/gCtMARO0cLuT2HcEKnTPvhjV6aGeqrCB/sbNop0Kszm0jsaWU4A==
@@ -12089,16 +12060,6 @@ recast@^0.11.3:
     private "~0.1.5"
     source-map "~0.5.0"
 
-recast@^0.18.1:
-  version "0.18.5"
-  resolved "https://registry.npmjs.org/recast/-/recast-0.18.5.tgz#9d5adbc07983a3c8145f3034812374a493e0fe4d"
-  integrity sha512-sD1WJrpLQAkXGyQZyGzTM75WJvyAd98II5CHdK3IYbt/cZlU0UzCRVU11nUFNXX9fBVEt4E9ajkMjBlUlG+Oog==
-  dependencies:
-    ast-types "0.13.2"
-    esprima "~4.0.0"
-    private "^0.1.8"
-    source-map "~0.6.1"
-
 rechoir@^0.6.2:
   version "0.6.2"
   resolved "https://registry.npmjs.org/rechoir/-/rechoir-0.6.2.tgz#85204b54dba82d5742e28c96756ef43af50e3384"