xref: /expo/packages/expo-barcode-scanner/build/BarCodeScanner.js.map (revision ef951f14)

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data: string }> {\n    if (!ExpoBarCodeScannerModule.scanFromURLAsync) {\n      throw new UnavailabilityError('expo-barcode-scanner', 'scanFromURLAsync');\n    }\n    if (Array.isArray(barCodeTypes) && !barCodeTypes.length) {\n      throw new Error('No barCodeTypes specified; provide at least one barCodeType for scanner');\n    }\n\n    if (Platform.OS === 'ios') {\n      if (Array.isArray(barCodeTypes) && !barCodeTypes.includes(BarCodeType.qr)) {\n        // Only QR type is supported on iOS, fail if one tries to use other types\n        throw new Error('Only QR type is supported by scanFromURLAsync() on iOS');\n      }\n      // on iOS use only supported QR type\n      return await ExpoBarCodeScannerModule.scanFromURLAsync(url, [BarCodeType.qr]);\n    }\n\n    // On other platforms, if barCodeTypes is not provided, use all available types\n    return await ExpoBarCodeScannerModule.scanFromURLAsync(url, barCodeTypes);\n  }\n\n  render() {\n    const nativeProps = this.convertNativeProps(this.props);\n    const { onBarCodeScanned } = this.props;\n    return (\n      <ExpoBarCodeScannerView\n        {...nativeProps}\n        onBarCodeScanned={this.onObjectDetected(onBarCodeScanned)}\n      />\n    );\n  }\n\n  // coordinates of cornerPoints and boundingBox are represented in DP (Display-Indepent Points) unit\n  // React Native is using the same unit\n  onObjectDetected = (callback?: BarCodeScannedCallback) => ({\n    nativeEvent,\n  }: BarCodeEventCallbackArguments) => {\n    const { type } = nativeEvent;\n    if (\n      this.lastEvents[type] &&\n      this.lastEventsTimes[type] &&\n      JSON.stringify(nativeEvent) === this.lastEvents[type] &&\n      Date.now() - this.lastEventsTimes[type] < EVENT_THROTTLE_MS\n    ) {\n      return;\n    }\n\n    if (callback) {\n      callback(nativeEvent);\n      this.lastEventsTimes[type] = new Date();\n      this.lastEvents[type] = JSON.stringify(nativeEvent);\n    }\n  };\n\n  convertNativeProps(props: BarCodeScannerProps) {\n    const newProps = mapValues(props, this.convertProp);\n    return newProps;\n  }\n\n  convertProp(value: any, key: string): any {\n    if (typeof value === 'string' && BarCodeScanner.ConversionTables[key]) {\n      return BarCodeScanner.ConversionTables[key][value];\n    }\n    return value;\n  }\n}\n\nexport const { Constants } = BarCodeScanner;\n"]}