dynamically set router based on owner

ui/lib/core/addon/components/linked-block.js

@@ -4,7 +4,7 @@
  */
 
 import Component from '@glimmer/component';
-import { service } from '@ember/service';
+import { getOwner } from '@ember/application';
 import { action } from '@ember/object';
 import { encodePath } from 'vault/utils/path-encoding-helpers';
 
@@ -26,7 +26,14 @@ import { encodePath } from 'vault/utils/path-encoding-helpers';
  */
 
 export default class LinkedBlockComponent extends Component {
-  @service router;
+  // We don't import the router service here because Ember Engine's use the alias 'app-router'
+  // Since this component is shared across engines, we look up the router dynamically using getOwner instead.
+  // This way we avoid throwing an error by looking up a service that doesn't exist.
+  // https://guides.emberjs.com/release/services/#toc_accessing-services
+  get router() {
+    const owner = getOwner(this);
+    return owner.lookup('service:router') || owner.lookup('service:app-router');
+  }
 
   @action
   onClick(event) {

ui/lib/core/addon/helpers/transition-to.js

@@ -0,0 +1,31 @@
+/**
+ * Copyright (c) HashiCorp, Inc.
+ * SPDX-License-Identifier: BUSL-1.1
+ */
+
+import Helper from '@ember/component/helper';
+import { getOwner } from '@ember/application';
+
+/*
+template helper that replaces ember-router-helpers https://github.com/rwjblue/ember-router-helpers
+example:
+<MyForm @onSave={{transition-to "vault.cluster.some.route.item" "item-id"}} />
+<MyForm @onSave={{transition-to "vault.cluster.some.external.route"  external=true}} />
+*/
+export default class TransitionTo extends Helper {
+  // We don't import the router service here because Ember Engine's use the alias 'app-router'
+  // Since this helper is shared across engines, we look up the router dynamically using getOwner instead.
+  // This way we avoid throwing an error by looking up a service that doesn't exist.
+  // https://guides.emberjs.com/release/services/#toc_accessing-services
+  get router() {
+    const owner = getOwner(this);
+    return owner.lookup('service:router') || owner.lookup('service:app-router');
+  }
+
+  compute(routeParams, { external = false }) {
+    if (external) {
+      return () => this.router.transitionToExternal(...routeParams);
+    }
+    return () => this.router.transitionTo(...routeParams);
+  }
+}

ui/lib/core/app/helpers/transition-to.js

@@ -0,0 +1,6 @@
+/**
+ * Copyright (c) HashiCorp, Inc.
+ * SPDX-License-Identifier: BUSL-1.1
+ */
+
+export { default } from 'core/helpers/transition-to';

ui/package.json

@@ -136,7 +136,6 @@
     "ember-qunit": "^8.0.1",
     "ember-resolver": "^11.0.1",
     "ember-responsive": "5.0.0",
-    "ember-router-helpers": "^0.4.0",
     "ember-service-worker": "meirish/ember-service-worker#configurable-scope",
     "ember-sinon-qunit": "^7.4.0",
     "ember-source": "~5.4.0",

ui/yarn.lock

@@ -7607,7 +7607,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"ember-cli-babel@npm:^7.1.2, ember-cli-babel@npm:^7.1.3, ember-cli-babel@npm:^7.10.0, ember-cli-babel@npm:^7.13.0, ember-cli-babel@npm:^7.18.0, ember-cli-babel@npm:^7.20.0, ember-cli-babel@npm:^7.22.1, ember-cli-babel@npm:^7.23.0, ember-cli-babel@npm:^7.26.11, ember-cli-babel@npm:^7.26.3, ember-cli-babel@npm:^7.26.4, ember-cli-babel@npm:^7.26.5, ember-cli-babel@npm:^7.26.6, ember-cli-babel@npm:^7.26.8, ember-cli-babel@npm:^7.5.0, ember-cli-babel@npm:^7.7.3":
+"ember-cli-babel@npm:^7.1.2, ember-cli-babel@npm:^7.1.3, ember-cli-babel@npm:^7.10.0, ember-cli-babel@npm:^7.13.0, ember-cli-babel@npm:^7.18.0, ember-cli-babel@npm:^7.22.1, ember-cli-babel@npm:^7.23.0, ember-cli-babel@npm:^7.26.11, ember-cli-babel@npm:^7.26.3, ember-cli-babel@npm:^7.26.4, ember-cli-babel@npm:^7.26.5, ember-cli-babel@npm:^7.26.6, ember-cli-babel@npm:^7.26.8, ember-cli-babel@npm:^7.5.0, ember-cli-babel@npm:^7.7.3":
   version: 7.26.11
   resolution: "ember-cli-babel@npm:7.26.11"
   dependencies:
@@ -8663,15 +8663,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"ember-router-helpers@npm:^0.4.0":
-  version: 0.4.0
-  resolution: "ember-router-helpers@npm:0.4.0"
-  dependencies:
-    ember-cli-babel: ^7.20.0
-  checksum: e847ceb1061f87416d6bb5d72ef539fda738a24086051bc94d740117c6353b3406c65247ac8190b8572df008a70d9f801e224d38489170129c5ca6c4ec7f206e
-  languageName: node
-  linkType: hard
-
 "ember-service-worker@meirish/ember-service-worker#configurable-scope":
   version: 9.0.1
   resolution: "ember-service-worker@https://github.com/meirish/ember-service-worker.git#commit=dda14187aace0d73ecdb6a55beac2194a3aec01b"
@@ -18840,7 +18831,6 @@ __metadata:
     ember-qunit: ^8.0.1
     ember-resolver: ^11.0.1
     ember-responsive: 5.0.0
-    ember-router-helpers: ^0.4.0
     ember-service-worker: "meirish/ember-service-worker#configurable-scope"
     ember-sinon-qunit: ^7.4.0
     ember-source: ~5.4.0