chore: upgrade ember v3.21.x

Author: LevelbossMike

.travis.yml

@@ -47,6 +47,7 @@ jobs:
     # we recommend new addons test the current and previous LTS
     # as well as latest stable release (bonus points to beta/canary)
     - env: EMBER_TRY_SCENARIO=ember-lts-3.16
+    - env: EMBER_TRY_SCENARIO=ember-lts-3.20
     - env: EMBER_TRY_SCENARIO=ember-release
     - env: EMBER_TRY_SCENARIO=ember-beta
     - env: EMBER_TRY_SCENARIO=ember-canary
@@ -56,8 +57,5 @@ before_install:
   - curl -o- -L https://yarnpkg.com/install.sh | bash
   - export PATH=$HOME/.yarn/bin:$PATH
 
-install:
-  - yarn install --non-interactive
-
 script:
   - node_modules/.bin/ember try:one $EMBER_TRY_SCENARIO

config/ember-try.js

@@ -6,18 +6,18 @@ module.exports = async function () {
   return {
     scenarios: [
       {
-        name: 'ember-3.15', // First Octane release
+        name: 'ember-lts-3.16',
         npm: {
           devDependencies: {
-            'ember-source': '~3.15.0',
+            'ember-source': '~3.16.0',
           },
         },
       },
       {
-        name: 'ember-lts-3.16',
+        name: 'ember-lts-3.20',
         npm: {
           devDependencies: {
-            'ember-source': '~3.16.0',
+            'ember-source': '~3.20.5',
           },
         },
       },
@@ -54,10 +54,20 @@ module.exports = async function () {
         },
         npm: {
           devDependencies: {
-            '@ember/jquery': '^0.5.1',
+            '@ember/jquery': '^1.1.0',
           },
         },
       },
+      {
+        name: 'ember-classic',
+        env: {
+          EMBER_OPTIONAL_FEATURES: JSON.stringify({
+            'application-template-wrapper': true,
+            'default-async-observers': false,
+            'template-only-glimmer-components': false,
+          }),
+        },
+      },
     ],
   };
 };

ember-cli-build.js

@@ -5,15 +5,6 @@ const EmberAddon = require('ember-cli/lib/broccoli/ember-addon');
 module.exports = function (defaults) {
   let app = new EmberAddon(defaults, {
     // Add options here
-
-    // Workaround for https://github.com/ember-cli/ember-cli/issues/8075
-    'ember-cli-uglify': {
-      uglify: {
-        compress: {
-          collapse_vars: false,
-        },
-      },
-    },
   });
 
   /*

package.json

@@ -27,16 +27,16 @@
     "postpublish": "ember ts:clean"
   },
   "dependencies": {
-    "@glimmer/tracking": "^1.0.0",
+    "@glimmer/tracking": "^1.0.1",
     "ember-auto-import": "^1.6.0",
-    "ember-cli-babel": "^7.21.0",
-    "ember-cli-htmlbars": "^5.2.0",
+    "ember-cli-babel": "^7.22.1",
+    "ember-cli-htmlbars": "^5.3.1",
     "ember-cli-typescript": "^3.1.4",
     "ember-usable": "https://github.com/pzuraq/ember-usable#0d03a50",
     "xstate": "^4.12.0"
   },
   "devDependencies": {
-    "@ember/optional-features": "^1.3.0",
+    "@ember/optional-features": "^2.0.0",
     "@ember/render-modifiers": "^1.0.2",
     "@glimmer/component": "^1.0.1",
     "@release-it/conventional-changelog": "^1.1.4",
@@ -50,7 +50,7 @@
     "babel-eslint": "^10.1.0",
     "broccoli-asset-rev": "^3.0.0",
     "ember-angle-bracket-invocation-polyfill": "^2.0.2",
-    "ember-cli": "~3.20.0",
+    "ember-cli": "~3.21.1",
     "ember-cli-addon-docs": "^0.6.16",
     "ember-cli-addon-docs-esdoc": "^0.2.3",
     "ember-cli-dependency-checker": "^3.2.0",
@@ -60,8 +60,8 @@
     "ember-cli-deploy-git-ci": "^1.0.1",
     "ember-cli-inject-live-reload": "^2.0.2",
     "ember-cli-sri": "^2.1.1",
+    "ember-cli-terser": "^4.0.0",
     "ember-cli-typescript-blueprints": "^3.0.0",
-    "ember-cli-uglify": "^3.0.0",
     "ember-concurrency": "^1.2.1",
     "ember-concurrency-async": "^0.3.1",
     "ember-concurrency-decorators": "^2.0.1",
@@ -72,20 +72,20 @@
     "ember-maybe-import-regenerator": "^0.1.6",
     "ember-qunit": "^4.6.0",
     "ember-qunit-assert-helpers": "^0.2.2",
-    "ember-resolver": "^8.0.0",
-    "ember-source": "~3.20.2",
-    "ember-source-channel-url": "^2.0.1",
-    "ember-template-lint": "^2.9.1",
+    "ember-resolver": "^8.0.2",
+    "ember-source": "~3.21.1",
+    "ember-source-channel-url": "^3.0.0",
+    "ember-template-lint": "^2.11.0",
     "ember-try": "^1.4.0",
-    "eslint": "^7.5.0",
+    "eslint": "^7.8.0",
     "eslint-config-prettier": "^6.10.1",
-    "eslint-plugin-ember": "^8.9.1",
+    "eslint-plugin-ember": "^8.13.0",
     "eslint-plugin-node": "^11.1.0",
     "eslint-plugin-prettier": "3.1.2",
     "loader.js": "^4.7.0",
     "npm-run-all": "^4.1.5",
     "prettier": "^2.0.2",
-    "qunit-dom": "^1.2.0",
+    "qunit-dom": "^1.4.0",
     "release-it": "^13.6.2",
     "typescript": "^4.0.2"
   },

tests/dummy/config/ember-cli-update.json

@@ -3,7 +3,7 @@
   "packages": [
     {
       "name": "ember-cli",
-      "version": "3.20.0",
+      "version": "3.21.1",
       "blueprints": [
         {
           "name": "addon",