1 files changed, 40 insertions, 0 deletions
diff --git a/src/js/scriptlets/should-inject-contentscript.js b/src/js/scriptlets/should-inject-contentscript.js
new file mode 100644
index 0000000..b9a2658
--- /dev/null
+++ b/src/js/scriptlets/should-inject-contentscript.js
@@ -0,0 +1,40 @@
+/*******************************************************************************
+
+    uBlock Origin - a comprehensive, efficient content blocker
+    Copyright (C) 2018-present Raymond Hill
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see {http://www.gnu.org/licenses/}.
+
+    Home: https://github.com/gorhill/uBlock
+*/
+
+'use strict';
+
+// If content scripts are already injected, we need to respond with `false`,
+// to "should inject content scripts?"
+//
+// https://github.com/uBlockOrigin/uBlock-issues/issues/403
+//   If the content script was not bootstrapped, give it another try.
+
+(( ) => {
+    try {
+        let status = vAPI.uBO !== true;
+        if ( status === false && vAPI.bootstrap ) {
+            self.requestIdleCallback(( ) => vAPI && vAPI.bootstrap());
+        }
+        return status;
+    } catch(ex) {
+    }
+    return true;
+})();