Fix format of lunr results

1 files changed, 12 insertions, 2 deletions

diff --git a/packages/gitbook-plugin-search/src/models/Result.js b/packages/gitbook-plugin-search/src/models/Result.js
index 71c6d9d..0012b2b 100644
--- a/packages/gitbook-plugin-search/src/models/Result.js
+++ b/packages/gitbook-plugin-search/src/models/Result.js
@@ -1,10 +1,20 @@
 const GitBook = require('gitbook-core');
 const { Record } = GitBook.Immutable;
 
-const Result = Record({
+const DEFAULTS = {
     url:   String(''),
     title: String(''),
     body:  String('')
-});
+};
+
+class Result extends Record(DEFAULTS) {
+    constructor(spec) {
+        if (!spec.url || !spec.title) {
+            throw new Error('"url" and "title" are required to create a search result');
+        }
+
+        super(spec);
+    }
+}
 
 module.exports = Result;