Replace ember-cli-meta-tags with ember-cli-head

`ember-cli-meta-tags` is almost unmaintained and causing several deprecation warnings. We can easily implement this ourselves on top of `ember-cli-head` instead.

Author: Turbo87

app/routes/crate.js

@@ -2,6 +2,7 @@ import Route from '@ember/routing/route';
 import { inject as service } from '@ember/service';
 
 export default class CrateRoute extends Route {
+  @service headData;
   @service notifications;
 
   async model(params) {
@@ -18,24 +19,13 @@ export default class CrateRoute extends Route {
     }
   }
 
-  afterModel(model) {
-    if (model && typeof model.get === 'function') {
-      this.setHeadTags(model);
-    }
+  setupController(controller, model) {
+    super.setupController(...arguments);
+    this.headData.crate = model;
   }
 
-  setHeadTags(model) {
-    let headTags = [
-      {
-        type: 'meta',
-        tagId: 'meta-description-tag',
-        attrs: {
-          name: 'description',
-          content: model.get('description') || 'A package for Rust.',
-        },
-      },
-    ];
-
-    this.set('headTags', headTags);
+  resetController() {
+    super.resetController(...arguments);
+    this.headData.crate = null;
   }
 }

app/routes/index.js

@@ -4,18 +4,6 @@ import { inject as service } from '@ember/service';
 export default class IndexRoute extends Route {
   @service fastboot;
 
-  headTags() {
-    return [
-      {
-        type: 'meta',
-        attrs: {
-          name: 'description',
-          content: 'cargo is the package manager and crate host for rust',
-        },
-      },
-    ];
-  }
-
   setupController(controller) {
     if (!controller.hasData) {
       let promise = controller.fetchData();

app/services/head-data.js

@@ -0,0 +1,13 @@
+import Service from '@ember/service';
+import { tracked } from '@glimmer/tracking';
+
+const DEFAULT_DESCRIPTION = 'cargo is the package manager and crate host for rust';
+const DEFAULT_CRATE_DESCRIPTION = 'A package for Rust.';
+
+export default class HeadDataService extends Service {
+  @tracked crate;
+
+  get description() {
+    return !this.crate ? DEFAULT_DESCRIPTION : this.crate.description || DEFAULT_CRATE_DESCRIPTION;
+  }
+}

app/templates/head.hbs

@@ -1 +1 @@
-<HeadTags @headTags={{this.model.headTags}} />
+<meta name="description" content={{this.model.description}}>

package.json

@@ -76,9 +76,9 @@
     "ember-cli-dependency-checker": "3.2.0",
     "ember-cli-dependency-lint": "2.0.1",
     "ember-cli-fastboot": "2.2.3",
+    "ember-cli-head": "2.0.0",
     "ember-cli-htmlbars": "6.0.0",
     "ember-cli-inject-live-reload": "2.1.0",
-    "ember-cli-meta-tags": "6.2.0",
     "ember-cli-mirage": "2.2.0",
     "ember-cli-notifications": "7.0.0",
     "ember-cli-terser": "4.0.2",

yarn.lock

@@ -6345,13 +6345,13 @@ ember-cli-get-component-path-option@^1.0.0:
   resolved "https://registry.yarnpkg.com/ember-cli-get-component-path-option/-/ember-cli-get-component-path-option-1.0.0.tgz#0d7b595559e2f9050abed804f1d8eff1b08bc771"
   integrity sha1-DXtZVVni+QUKvtgE8djv8bCLx3E=
 
-ember-cli-head@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/ember-cli-head/-/ember-cli-head-1.0.0.tgz#72a71b3db2039b66585c754fd33bc3c36ff86fc1"
-  integrity sha512-7gj8H/KSF+e4pxSKxj9F8hq9PUt2vOjCaOvRdxdmyoHnko4QbiUnv8ASpXuop+m15eNIUGOlaLrJJ3jM8oQEUw==
+ember-cli-head@2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/ember-cli-head/-/ember-cli-head-2.0.0.tgz#ce294341026fd643067712a438008d6139f5208d"
+  integrity sha512-i9qwljBlpzU/ei0xN+FiCHUvU1ZdjVXk0OzRKoeMZJK3m4p29CvB095klT0q+PigvYFYHIyTaeSWmbgjP8CZiw==
   dependencies:
-    ember-cli-babel "^7.19.0"
-    ember-cli-htmlbars "^4.3.1"
+    ember-cli-babel "^7.26.3"
+    ember-cli-htmlbars "^5.7.1"
     ember-in-element-polyfill "^1.0.0"
 
 [email protected]:
@@ -6385,7 +6385,7 @@ ember-cli-htmlbars@^3.0.0:
     json-stable-stringify "^1.0.1"
     strip-bom "^3.0.0"
 
-ember-cli-htmlbars@^4.2.0, ember-cli-htmlbars@^4.2.2, ember-cli-htmlbars@^4.2.3, ember-cli-htmlbars@^4.3.1:
+ember-cli-htmlbars@^4.2.0, ember-cli-htmlbars@^4.2.3:
   version "4.5.0"
   resolved "https://registry.yarnpkg.com/ember-cli-htmlbars/-/ember-cli-htmlbars-4.5.0.tgz#d299e4f7eba6f30dc723ee086906cc550beb252e"
   integrity sha512-bYJpK1pqFu9AadDAGTw05g2LMNzY8xTCIqQm7dMJmKEoUpLRFbPf4SfHXrktzDh7Q5iggl6Skzf1M0bPlIxARw==
@@ -6445,16 +6445,6 @@ [email protected], ember-cli-lodash-subset@^2.0.1:
   resolved "https://registry.yarnpkg.com/ember-cli-lodash-subset/-/ember-cli-lodash-subset-2.0.1.tgz#20cb68a790fe0fde2488ddfd8efbb7df6fe766f2"
   integrity sha1-IMtop5D+D94kiN39jvu332/nZvI=
 
-[email protected]:
-  version "6.2.0"
-  resolved "https://registry.yarnpkg.com/ember-cli-meta-tags/-/ember-cli-meta-tags-6.2.0.tgz#e7a56326a2ad0ffc6f1174c8bb15394d2b98f6ec"
-  integrity sha512-bWznJttpkyscpM1MolVBdxvBsKSNOAYO4t6rN4huBl4WWup74spOpO+O/3T+qdgWTQ4UEyNaQMZK5EeFT+hScg==
-  dependencies:
-    ember-cli-babel "^7.26.6"
-    ember-cli-head "^1.0.0"
-    ember-cli-htmlbars "^4.2.2"
-    ember-compatibility-helpers "^1.1.2"
-
 [email protected]:
   version "2.2.0"
   resolved "https://registry.yarnpkg.com/ember-cli-mirage/-/ember-cli-mirage-2.2.0.tgz#38f4ec02536dd50ecdb265da2abbf7986d66b091"