Disable indexedDB support if an error is thrown (shaka-project#2236)

kaharman · Nov 14, 2019 · b4bfa15 · b4bfa15
1 parent 47c857d
commit b4bfa15
Showing 1 changed file with 17 additions and 0 deletions.
diff --git a/lib/polyfill/indexed_db.js b/lib/polyfill/indexed_db.js
@@ -32,8 +32,25 @@ shaka.polyfill.IndexedDB = class {
   static install() {
     shaka.log.debug('IndexedDB.install');
 
+    let disableIDB = false;
     if (shaka.util.Platform.isChromecast()) {
       shaka.log.debug('Removing IndexedDB from ChromeCast');
+      disableIDB = true;
+    } else {
+      try {
+        // This is necessary to avoid Closure compiler over optimize this
+        // block and remove it if it looks like a noop
+        if (window.indexedDB) {
+          disableIDB = false;
+        }
+      } catch (e) {
+        shaka.log.debug(
+            'Removing IndexedDB due to an exception when accessing it');
+        disableIDB = true;
+      }
+    }
+
+    if (disableIDB) {
       delete window.indexedDB;
       goog.asserts.assert(
           !window.indexedDB, 'Failed to override window.indexedDB');