feat: re-export setZXingModuleOverrides

The BarcodeDetector polyfill fetches a WASM file at runtime from a
CDN. That's a problem for offline applications or applications that
run in a network with strict CSP policy. As a workaround the polyfill
exports a function to configure the WASM file URL. So we re-export
the function here.

Also, by default the BarcodeDetector polyfill installs itself by setting
`globalThis.BarcodeDetector` but only if there is no native support.
This is likely not SSR compatible. Also, native support `BarcodeDetector`
is inconsistent. For example, Chrome on MacOS does support `BarcodeDetector`
but does not support `Blob` inputs, violating the specification. To have
a more consistent support we simply always use the polyfill on all
platforms. That likely comes as at a performance cost in raw scanning speed
on supporting platforms but the download penalty is paid either way.

See #354 #353

Author: gruhn

README.md

@@ -167,3 +167,11 @@ Use kebab-case to reference them in your templates:
 #### How to make it work with Vue 2?
 
 Support is dropped but you can downgrade to vue-qrcode-reader v3.* or lower.
+
+#### I get a "Failed to fetch" error at runtime for some Wasm file.
+
+That Wasm file implements the QR code detector. 
+Unfortunately, it's not very convenient to bundle this file with the package.
+So by default we fetch it at runtime from a CDN.
+That's an issue for offline applications or applications that run in a network with strict CSP policy. 
+For a workaround see: https://github.com/gruhn/vue-qrcode-reader/issues/354

package.json

@@ -36,7 +36,7 @@
     "dist"
   ],
   "dependencies": {
-    "@sec-ant/barcode-detector": "^0.1.5",
+    "@sec-ant/barcode-detector": "^1.1.2",
     "webrtc-adapter": "^8.2.2"
   },
   "devDependencies": {