From d0c217faeb3dbcf2179d3e8dfc7f139590493dcd Mon Sep 17 00:00:00 2001
From: pkunszt <pkunszt@gmail.com>
Date: Mon, 28 Aug 2023 12:37:20 +0200
Subject: [PATCH] if the permission query throws, like on firefox, try with
 mediaDevices.getUserMedia. this works on firefox nicely. see issue #259

---
 src/web.ts | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/web.ts b/src/web.ts
index 5c7e91b..f39354e 100644
--- a/src/web.ts
+++ b/src/web.ts
@@ -117,7 +117,16 @@ export class BarcodeScannerWeb extends WebPlugin implements BarcodeScannerPlugin
         unknown: true,
       };
     } catch {
-      throw this.unavailable('Camera permissions are not available in this browser');
+      try {
+        await navigator.mediaDevices.getUserMedia({video: true});
+        return { granted: true };
+      } catch (err) {
+        if ( (err as DOMException).name === 'NotAllowedError') {
+          return { denied: true };
+        } else {
+          throw this.unavailable('Camera permissions are not available in this browser');
+        }
+      }
     }
   }