honor fastboot 1.0.0 format over browser intitializer

app/instance-initializers/ember-href-to.js

@@ -0,0 +1,34 @@
+import Em from 'ember';
+import HrefTo from 'ember-href-to/href-to';
+
+let hrefToClickHandler;
+function closestLink(el) {
+  if (el.closest) {
+    return el.closest('a');
+  } else {
+    el = el.parentElement;
+    while (el && el.tagName !== 'A') {
+      el = el.parentElement;
+    }
+    return el;
+  }
+}
+export default {
+  name: 'ember-href-to',
+  initialize(applicationInstance) {
+    // we only want this to run in the browser, not in fastboot
+    if (typeof(FastBoot) === "undefined") {
+      if (hrefToClickHandler !== undefined) {
+        document.body.removeEventListener('click', hrefToClickHandler);
+      }
+      hrefToClickHandler = function _hrefToClickHandler(e) {
+        let link = e.target.tagName === 'A' ? e.target : closestLink(e.target);
+        if (link) {
+          let hrefTo = new HrefTo(applicationInstance, e, link);
+          hrefTo.maybeHandle();
+        }
+      }
+      document.body.addEventListener('click', hrefToClickHandler);
+    }
+  }
+};