fix(Highlight): only warn once for possibly missing highlighting

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/.`
       );
     }

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);
+}