From 7aa3126cb0e31b2bf3baf90ca8f6691627730848 Mon Sep 17 00:00:00 2001
From: Haroen Viaene <fingebimus@me.com>
Date: Fri, 2 Feb 2018 10:03:12 +0100
Subject: [PATCH] fix(Highlight): only warn once for possibly missing
 highlighting (algolia/vue-instantsearch#386)

fixes algolia/vue-instantsearch#385
---
 packages/vue-instantsearch/src/components/Highlight.js | 5 +++--
 packages/vue-instantsearch/src/util/warn.js            | 8 ++++++++
 2 files changed, 11 insertions(+), 2 deletions(-)
 create mode 100644 packages/vue-instantsearch/src/util/warn.js

diff --git a/packages/vue-instantsearch/src/components/Highlight.js b/packages/vue-instantsearch/src/components/Highlight.js
index 145fdbea88..af3f39aa1c 100644
--- a/packages/vue-instantsearch/src/components/Highlight.js
+++ b/packages/vue-instantsearch/src/components/Highlight.js
@@ -1,4 +1,5 @@
 import { getPropertyByPath } from '../util/object';
+import { warn } from '../util/warn';
 
 export default {
   functional: true,
@@ -20,8 +21,8 @@ export default {
     const attributeValue = getPropertyByPath(result, attributePath);
 
     if (process.env.NODE_ENV !== 'production' && attributeValue === undefined) {
-      throw new Error(
-        `The "${attributeName}" attribute is currently not configured to be highlighted in Algolia.
+      warn(
+        `The "${attributeName}" attribute might currently not be configured to be highlighted in Algolia.
         See https://www.algolia.com/doc/api-reference/api-parameters/attributesToHighlight/.`
       );
     }
diff --git a/packages/vue-instantsearch/src/util/warn.js b/packages/vue-instantsearch/src/util/warn.js
new file mode 100644
index 0000000000..db4c319c58
--- /dev/null
+++ b/packages/vue-instantsearch/src/util/warn.js
@@ -0,0 +1,8 @@
+const cache = new Set();
+
+export function warn(message) {
+  if (cache.has(message)) return;
+  cache.add(message);
+  // eslint-disable-next-line no-console
+  console.warn(message);
+}