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Handle the case of no video device being found

Merged Handle the case of no video device being found
fix-error-on-no-video into master
Merged Reiter, Christoph requested to merge fix-error-on-no-video into master
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packages/qr-code-scanner/src/qr-code-scanner.js
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@@ -112,7 +112,7 @@ export class QrCodeScanner extends ScopedElementsMixin(DBPLitElement) {
if (/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent)) {
that.activeCamera = 'environment';
} else {
that.activeCamera = Array.from(devices_map)[0][0];
that.activeCamera = devices_map.size ? Array.from(devices_map)[0][0] : '';
}
@@ -141,7 +141,7 @@ export class QrCodeScanner extends ScopedElementsMixin(DBPLitElement) {
if (/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent)) {
that.activeCamera = 'environment';
} else {
that.activeCamera = Array.from(devices_map)[0][0];
that.activeCamera = devices_map.size ? Array.from(devices_map)[0][0] : '';
}
resolve(results);
}