Fix performance bar spacing

app/assets/javascripts/performance_bar/components/detailed_metric.vue

@@ -27,6 +27,11 @@ export default {
       required: true,
     },
   },
+  computed: {
+    detailsList() {
+      return this.currentRequest.details[this.metric][this.details];
+    },
+  },
 };
 </script>
 <template>
@@ -55,19 +60,30 @@ export default {
       :header-title-text="header"
       class="performance-bar-modal"
     >
-      <table class="table">
-        <tr
-          v-for="(item, index) in currentRequest.details[metric][details]"
-          :key="index"
-        >
-          <td><strong>{{ item.duration }}ms</strong></td>
-          <td
-            v-for="key in keys"
-            :key="key"
+      <table
+        class="table"
+      >
+        <template v-if="detailsList.length">
+          <tr
+            v-for="(item, index) in detailsList"
+            :key="index"
           >
-            {{ item[key] }}
-          </td>
-        </tr>
+            <td><strong>{{ item.duration }}ms</strong></td>
+            <td
+              v-for="key in keys"
+              :key="key"
+            >
+              {{ item[key] }}
+            </td>
+          </tr>
+        </template>
+        <template v-else>
+          <tr>
+            <td>
+              No {{ header.toLowerCase() }} for this request.
+            </td>
+          </tr>
+        </template>
       </table>
 
       <div slot="footer">

app/assets/javascripts/performance_bar/components/performance_bar_app.vue

@@ -124,7 +124,7 @@ export default {
       class="view prepend-left-5"
     >
       <span
-        v-if="currentRequest && currentRequest.details"
+        v-if="currentRequest && currentRequest.details && currentRequest.details.host"
         class="current-host"
       >
         {{ currentRequest.details.host.hostname }}

app/assets/javascripts/performance_bar/components/upstream_performance_bar.vue

@@ -5,6 +5,8 @@ export default {
       .getElementById('peek-view-performance-bar')
       .cloneNode(true);
 
+    upstreamPerformanceBar.classList.remove('hidden');
+
     this.$refs.wrapper.appendChild(upstreamPerformanceBar);
   },
 };

app/assets/javascripts/performance_bar/index.js

@@ -4,9 +4,9 @@ import Vue from 'vue';
 import performanceBarApp from './components/performance_bar_app.vue';
 import PerformanceBarStore from './stores/performance_bar_store';
 
-export default () =>
+export default ({ container }) =>
   new Vue({
-    el: '#js-peek',
+    el: container,
     components: {
       performanceBarApp,
     },

app/views/peek/_bar.html.haml

@@ -6,7 +6,7 @@
          profile_url: url_for(params.merge(lineprofiler: 'true')) },
          class: Peek.env }
 
-#peek-view-performance-bar
+#peek-view-performance-bar.hidden
   = render_server_response_time
   %span#serverstats
   %ul.performance-bar