1 files changed, 10 insertions, 0 deletions
diff --git a/ext/bg/js/backend.js b/ext/bg/js/backend.js
index 1a874dc8..55841cd6 100644
--- a/ext/bg/js/backend.js
+++ b/ext/bg/js/backend.js
@@ -23,6 +23,7 @@ class Backend {
         this.anki = new AnkiNull();
         this.mecab = new Mecab();
         this.options = null;
+        this.optionsSchema = null;
         this.optionsContext = {
             depth: 0,
             url: window.location.href
@@ -38,7 +39,16 @@ class Backend {
 
     async prepare() {
         await this.translator.prepare();
+
+        this.optionsSchema = await requestJson(chrome.runtime.getURL('/bg/data/options-schema.json'), 'GET');
         this.options = await optionsLoad();
+        try {
+            this.options = JsonSchema.getValidValueOrDefault(this.optionsSchema, this.options);
+        } catch (e) {
+            // This shouldn't happen, but catch errors just in case of bugs
+            logError(e);
+        }
+
         this.onOptionsUpdated('background');
 
         if (chrome.commands !== null && typeof chrome.commands === 'object') {