fix: scroll hash anchor into view (ember-learn#403)

fixes ember-learn#228

Author: makepanic

addon/initializers/route-anchor-jump.js

@@ -0,0 +1,24 @@
+import Route from '@ember/routing/route';
+import { scheduleOnce } from '@ember/runloop';
+
+export function initialize() {
+  Route.reopen({
+    afterModel() {
+      this._super(...arguments);
+
+      const { hash } = location;
+      if (hash && hash.length) {
+        scheduleOnce('afterRender', null, () => {
+          const anchor = document.querySelector(`a[href="${hash}"`);
+          if (anchor) {
+            anchor.scrollIntoView();
+          }
+        });
+      }
+    }
+  })
+}
+
+export default {
+  initialize
+};

app/initializers/route-anchor-jump.js

@@ -0,0 +1 @@
+export { default, initialize } from 'ember-cli-addon-docs/initializers/route-anchor-jump';