add dash-array to siblings

src/components/NodeMap.vue

@@ -8,7 +8,7 @@
         v-for="(item, index) in links"
         :key="`link_${index}`"
         :d="lineGenerator([item.source, item.target])"
-        stroke="black"
+        :class="['link', item.linkType || item.target.data.linkType]"
       />
 
       <template v-for="(node, index) in nodes">
@@ -152,8 +152,17 @@ export default {
 </script>
 
 <style lang="scss" scoped>
-path {
+.link {
   stroke: grey;
+
+  &.siblings {
+    stroke-dasharray: 4;
+  }
+
+  &.parents {
+    stroke: red;
+    opacity: .3;
+  }
 }
 
 text {