enable embroider build, downgrade ember due to negative interaction w…

…ith emberjs/ember.js#19540

app/router.js

@@ -1,4 +1,4 @@
-import EmberRouter from '@ember/routing/router';
+import EmberRouter from '@embroider/router';
 import config from 'ffxiv-meter/config/environment';
 
 export default class Router extends EmberRouter {

babel.config.json

@@ -0,0 +1,3 @@
+{
+  "sourceType": "unambiguous"
+}

ember-cli-build.js

@@ -57,5 +57,19 @@ module.exports = function (defaults) {
   // please specify an object with the list of modules as keys
   // along with the exports of each module as its value.
 
-  return app.toTree();
+  if (process.env.NO_EMBROIDER) {
+    return app.toTree();
+  } else {
+    const { Webpack } = require('@embroider/webpack');
+    return require('@embroider/compat').compatBuild(app, Webpack, {
+      staticAddonTestSupportTrees: true,
+      staticAddonTrees: true,
+      staticHelpers: true,
+      staticComponents: true,
+      splitAtRoutes: ['application'], // can also be a RegExp
+      packagerOptions: {
+        // webpackConfig: {},
+      },
+    });
+  }
 };

package.json

@@ -25,6 +25,10 @@
   "devDependencies": {
     "@ember/optional-features": "^2.0.0",
     "@ember/test-helpers": "^2.2.5",
+    "@embroider/compat": "^0.43.4",
+    "@embroider/core": "^0.43.4",
+    "@embroider/router": "^0.43.4",
+    "@embroider/webpack": "^0.43.4",
     "@fullhuman/postcss-purgecss": "^4.0.3",
     "@glimmer/component": "^1.0.4",
     "@glimmer/tracking": "^1.0.4",
@@ -47,7 +51,7 @@
     "ember-maybe-import-regenerator": "^0.1.6",
     "ember-qunit": "^5.1.4",
     "ember-resolver": "^8.0.2",
-    "ember-source": "~3.27.2",
+    "ember-source": "~3.26.1",
     "ember-template-lint": "^3.4.2",
     "ember-truth-helpers": "^3.0.0",
     "eslint": "^7.27.0",
@@ -62,7 +66,8 @@
     "prettier": "^2.3.0",
     "qunit": "^2.15.0",
     "qunit-dom": "^1.6.0",
-    "tailwindcss": "^2.2.7"
+    "tailwindcss": "^2.2.7",
+    "webpack": "^5.49.0"
   },
   "engines": {
     "node": "10.* || >= 12"