Fixed hooks sample to be in line with @mauriciords implementation

examples/basic/App.js

@@ -1,5 +1,5 @@
 /* eslint-disable no-console */
-import React from 'react';
+import React, {useState, useReducer, useRef} from 'react';
 import {
   StyleSheet,
   Text,
@@ -30,61 +30,87 @@ const wbOrder = {
 
 const landmarkSize = 2;
 
-export default class CameraScreen extends React.Component {
-  state = {
-    flash: 'off',
-    zoom: 0,
-    autoFocus: 'on',
-    autoFocusPoint: {
-      normalized: { x: 0.5, y: 0.5 }, // normalized values required for autoFocusPointOfInterest
-      drawRectPosition: {
-        x: Dimensions.get('window').width * 0.5 - 32,
-        y: Dimensions.get('window').height * 0.5 - 32,
-      },
+const stateReducer = (state, action) => {
+  switch (action.type) {
+    case 'toggleFlash':
+      return { state.flash === flashModeOrder[ state.flash] }     
+      break;
+    case 'toggleZoom':
+      return { state.flash === flashModeOrder[ state.flash] }     
+      break;  
+    default:
+      break;
+  }
+}
+
+const initialState = {
+  flash: 'off',
+  zoom: 0,
+  autoFocus: 'on',
+  depth: 0,
+  type: 'back',
+  whiteBalance: 'auto',
+  ratio: '16:9',
+  isRecording: false,
+  canDetectFaces: false,
+  canDetectText: false,
+  canDetectBarcode: false,
+  faces: [],
+  textBlocks: [],
+  barcodes: [],
+
+  recordOptions: {
+    mute: false,
+    maxDuration: 5,
+    quality: RNCamera.Constants.VideoQuality['288p'],
+  },
+  autoFocusPoint: {
+    normalized: { x: 0.5, y: 0.5 }, // normalized values required for autoFocusPointOfInterest
+    drawRectPosition: {
+      x: Dimensions.get('window').width * 0.5 - 32,
+      y: Dimensions.get('window').height * 0.5 - 32,
     },
-    depth: 0,
-    type: 'back',
-    whiteBalance: 'auto',
-    ratio: '16:9',
-    recordOptions: {
-      mute: false,
-      maxDuration: 5,
-      quality: RNCamera.Constants.VideoQuality['288p'],
-    },
-    isRecording: false,
-    canDetectFaces: false,
-    canDetectText: false,
-    canDetectBarcode: false,
-    faces: [],
-    textBlocks: [],
-    barcodes: [],
-  };
+  },
 
-  toggleFacing() {
-    this.setState({
-      type: this.state.type === 'back' ? 'front' : 'back',
-    });
+};
+
+
+
+const CameraScreen = () => {
+  const [state, setState] = useState(initialState);  
+  const [recordOptions, togglerecordOptions] = useReducer(reducer, initialState.recordOptions);  
+  const [autoFocusPoint, touchToFocus] = useReducer(reducer, initialState.autoFocusPoint);  
+  const cameraRef = useRef(null);
+
+  toggleFacing =() =>{
+    setState({
+      ...state,
+      type: type === 'back' ? 'front' : 'back',
+    })
   }
 
-  toggleFlash() {
-    this.setState({
-      flash: flashModeOrder[this.state.flash],
-    });
+  toggleFlash =() => {
+    setState({
+      ...state,
+      flash: flashModeOrder[flash]
+    })
   }
 
-  toggleWB() {
-    this.setState({
-      whiteBalance: wbOrder[this.state.whiteBalance],
-    });
+  toggleWB =() => {
+    setState({
+      ...state,
+      whiteBalance: wbOrder[whiteBalance]
+    })      
   }
 
-  toggleFocus() {
-    this.setState({
-      autoFocus: this.state.autoFocus === 'on' ? 'off' : 'on',
-    });
+  toggleFocus =() =>{
+    setState({
+      ...state,
+      autoFocus: autoFocus === 'on' ? 'off' : 'on'
+    })
   }
 
-  touchToFocus(event) {
+  touchToFocus =(event) => {
     const { pageX, pageY } = event.nativeEvent;
     const screenWidth = Dimensions.get('window').width;
     const screenHeight = Dimensions.get('window').height;
@@ -97,49 +123,56 @@ export default class CameraScreen extends React.Component {
       x = pageY / screenHeight;
       y = -(pageX / screenWidth) + 1;
     }
-
-    this.setState({
+    return {
       autoFocusPoint: {
         normalized: { x, y },
         drawRectPosition: { x: pageX, y: pageY },
       },
+    };
+  }
+  zoomOut =() =>{
+    setState({
+      ...state,
+      zoom: state.zoom - 0.1 < 0 ? 0 : state.zoom - 0.1,
+    })
+  }
+
+  zoomIn =() => {
+    setState({
+      ...state,
+      zoom: state.zoom + 0.1 > 1 ? 1 : state.zoom + 0.1,
     });
   }
 
-  zoomOut() {
-    this.setState({
-      zoom: this.state.zoom - 0.1 < 0 ? 0 : this.state.zoom - 0.1,
-    });
-  }
-
-  zoomIn() {
-    this.setState({
-      zoom: this.state.zoom + 0.1 > 1 ? 1 : this.state.zoom + 0.1,
-    });
-  }
-
-  setFocusDepth(depth) {
-    this.setState({
-      depth,
+  setFocusDepth = (depth) => {
+    setState({
+      ...state,
+      depth: depth
     });
   }
 
   takePicture = async function() {
-    if (this.camera) {
-      const data = await this.camera.takePictureAsync();
+    if (cameraRef) {
+      const data = await cameraRef.takePictureAsync();
       console.warn('takePicture ', data);
     }
   };
 
   takeVideo = async function() {
-    if (this.camera) {
+    if (cameraRef) {
       try {
-        const promise = this.camera.recordAsync(this.state.recordOptions);
+        const promise = cameraRef.recordAsync( state.recordOptions);
 
         if (promise) {
-          this.setState({ isRecording: true });
+          setState({
+            ...state,
+             isRecording: true 
+            });
           const data = await promise;
-          this.setState({ isRecording: false });
+          setState({
+            ...state,
+             isRecording: false 
+          });
           console.warn('takeVideo', data);
         }
       } catch (e) {
@@ -148,9 +181,19 @@ export default class CameraScreen extends React.Component {
     }
   };
 
-  toggle = value => () => this.setState(prevState => ({ [value]: !prevState[value] }));
+  toggle = value => () => {
+    setState({
+      ...state,
+      [value]: !prevState[value] 
+    })
+  };
 
-  facesDetected = ({ faces }) => this.setState({ faces });
+  facesDetected = ({ faces }) => {
+    setState({
+      ...state,
+      faces: faces 
+    })
+  };
 
   renderFace = ({ bounds, faceID, rollAngle, yawAngle }) => (
     <View
@@ -175,7 +218,7 @@ export default class CameraScreen extends React.Component {
     </View>
   );
 
-  renderLandmarksOfFace(face) {
+  renderLandmarksOfFace =(face) => {
     const renderLandmark = position =>
       position && (
         <View
@@ -207,19 +250,19 @@ export default class CameraScreen extends React.Component {
 
   renderFaces = () => (
     <View style={styles.facesContainer} pointerEvents="none">
-      {this.state.faces.map(this.renderFace)}
+      { state.faces.map(() => renderFace())}
     </View>
   );
 
   renderLandmarks = () => (
     <View style={styles.facesContainer} pointerEvents="none">
-      {this.state.faces.map(this.renderLandmarksOfFace)}
+      { state.faces.map(() => renderLandmarksOfFace())}
     </View>
   );
 
   renderTextBlocks = () => (
     <View style={styles.facesContainer} pointerEvents="none">
-      {this.state.textBlocks.map(this.renderTextBlock)}
+      { state.textBlocks.map(() => renderTextBlock())}
     </View>
   );
 
@@ -243,14 +286,22 @@ export default class CameraScreen extends React.Component {
 
   textRecognized = object => {
     const { textBlocks } = object;
-    this.setState({ textBlocks });
+    setState({
+      ...state,
+       textBlocks: textBlocks 
+    });
   };
 
-  barcodeRecognized = ({ barcodes }) => this.setState({ barcodes });
+  barcodeRecognized = ({ barcodes }) => {
+    setState({
+      ...stat,
+       barcodes 
+    })
+  };
 
   renderBarcodes = () => (
     <View style={styles.facesContainer} pointerEvents="none">
-      {this.state.barcodes.map(this.renderBarcode)}
+      { state.barcodes.map( renderBarcode)}
     </View>
   );
 
@@ -271,30 +322,30 @@ export default class CameraScreen extends React.Component {
     </React.Fragment>
   );
 
-  renderCamera() {
-    const { canDetectFaces, canDetectText, canDetectBarcode } = this.state;
+  renderCamera = () => {
+    const { canDetectFaces, canDetectText, canDetectBarcode } =  state;
 
     const drawFocusRingPosition = {
-      top: this.state.autoFocusPoint.drawRectPosition.y - 32,
-      left: this.state.autoFocusPoint.drawRectPosition.x - 32,
+      top:  state.autoFocusPoint.drawRectPosition.y - 32,
+      left:  state.autoFocusPoint.drawRectPosition.x - 32,
     };
     return (
       <RNCamera
         ref={ref => {
-          this.camera = ref;
+          cameraRef = ref;
         }}
         style={{
           flex: 1,
           justifyContent: 'space-between',
         }}
-        type={this.state.type}
-        flashMode={this.state.flash}
-        autoFocus={this.state.autoFocus}
-        autoFocusPointOfInterest={this.state.autoFocusPoint.normalized}
-        zoom={this.state.zoom}
-        whiteBalance={this.state.whiteBalance}
-        ratio={this.state.ratio}
-        focusDepth={this.state.depth}
+        type={ state.type}
+        flashMode={ state.flash}
+        autoFocus={ state.autoFocus}
+        autoFocusPointOfInterest={ state.autoFocusPoint.normalized}
+        zoom={ state.zoom}
+        whiteBalance={ state.whiteBalance}
+        ratio={ state.ratio}
+        focusDepth={ state.depth}
         androidCameraPermissionOptions={{
           title: 'Permission to use camera',
           message: 'We need your permission to use your camera',
@@ -306,13 +357,13 @@ export default class CameraScreen extends React.Component {
             ? RNCamera.Constants.FaceDetection.Landmarks.all
             : undefined
         }
-        onFacesDetected={canDetectFaces ? this.facesDetected : null}
-        onTextRecognized={canDetectText ? this.textRecognized : null}
-        onGoogleVisionBarcodesDetected={canDetectBarcode ? this.barcodeRecognized : null}
+        onFacesDetected={canDetectFaces ? facesDetected() : null}
+        onTextRecognized={canDetectText ? textRecognized() : null}
+        onGoogleVisionBarcodesDetected={canDetectBarcode ? barcodeRecognized() : null}
       >
         <View style={StyleSheet.absoluteFill}>
           <View style={[styles.autoFocusBox, drawFocusRingPosition]} />
-          <TouchableWithoutFeedback onPress={this.touchToFocus.bind(this)}>
+          <TouchableWithoutFeedback onPress={() => touchToFocus()}>
             <View style={{ flex: 1 }} />
           </TouchableWithoutFeedback>
         </View>
@@ -332,14 +383,14 @@ export default class CameraScreen extends React.Component {
               justifyContent: 'space-around',
             }}
           >
-            <TouchableOpacity style={styles.flipButton} onPress={this.toggleFacing.bind(this)}>
+            <TouchableOpacity style={styles.flipButton} onPress={() => toggleFacing()}>
               <Text style={styles.flipText}> FLIP </Text>
             </TouchableOpacity>
-            <TouchableOpacity style={styles.flipButton} onPress={this.toggleFlash.bind(this)}>
-              <Text style={styles.flipText}> FLASH: {this.state.flash} </Text>
+            <TouchableOpacity style={styles.flipButton} onPress={() => toggleFlash()}>
+              <Text style={styles.flipText}> FLASH: { state.flash} </Text>
             </TouchableOpacity>
-            <TouchableOpacity style={styles.flipButton} onPress={this.toggleWB.bind(this)}>
-              <Text style={styles.flipText}> WB: {this.state.whiteBalance} </Text>
+            <TouchableOpacity style={styles.flipButton} onPress={() => toggleWB()}>
+              <Text style={styles.flipText}> WB: { state.whiteBalance} </Text>
             </TouchableOpacity>
           </View>
           <View
@@ -349,17 +400,17 @@ export default class CameraScreen extends React.Component {
               justifyContent: 'space-around',
             }}
           >
-            <TouchableOpacity onPress={this.toggle('canDetectFaces')} style={styles.flipButton}>
+            <TouchableOpacity onPress={()=> toggle('canDetectFaces')} style={styles.flipButton}>
               <Text style={styles.flipText}>
                 {!canDetectFaces ? 'Detect Faces' : 'Detecting Faces'}
               </Text>
             </TouchableOpacity>
-            <TouchableOpacity onPress={this.toggle('canDetectText')} style={styles.flipButton}>
+            <TouchableOpacity onPress={()=> toggle('canDetectText')} style={styles.flipButton}>
               <Text style={styles.flipText}>
                 {!canDetectText ? 'Detect Text' : 'Detecting Text'}
               </Text>
             </TouchableOpacity>
-            <TouchableOpacity onPress={this.toggle('canDetectBarcode')} style={styles.flipButton}>
+            <TouchableOpacity onPress={()=> toggle('canDetectBarcode')} style={styles.flipButton}>
               <Text style={styles.flipText}>
                 {!canDetectBarcode ? 'Detect Barcode' : 'Detecting Barcode'}
               </Text>
@@ -377,9 +428,9 @@ export default class CameraScreen extends React.Component {
           >
             <Slider
               style={{ width: 150, marginTop: 15, alignSelf: 'flex-end' }}
-              onValueChange={this.setFocusDepth.bind(this)}
+              onValueChange={() => setFocusDepth()}
               step={0.1}
-              disabled={this.state.autoFocus === 'on'}
+              disabled={ state.autoFocus === 'on'}
             />
           </View>
           <View
@@ -396,20 +447,20 @@ export default class CameraScreen extends React.Component {
                 {
                   flex: 0.3,
                   alignSelf: 'flex-end',
-                  backgroundColor: this.state.isRecording ? 'white' : 'darkred',
+                  backgroundColor:  state.isRecording ? 'white' : 'darkred',
                 },
               ]}
-              onPress={this.state.isRecording ? () => {} : this.takeVideo.bind(this)}
+              onPress={ state.isRecording ? () => {} : () => takeVideo()}
             >
-              {this.state.isRecording ? (
+              { state.isRecording ? (
                 <Text style={styles.flipText}> ☕ </Text>
               ) : (
                 <Text style={styles.flipText}> REC </Text>
               )}
             </TouchableOpacity>
           </View>
-          {this.state.zoom !== 0 && (
-            <Text style={[styles.flipText, styles.zoomText]}>Zoom: {this.state.zoom}</Text>
+          { state.zoom !== 0 && (
+            <Text style={[styles.flipText, styles.zoomText]}>Zoom: { state.zoom}</Text>
           )}
           <View
             style={{
@@ -421,43 +472,44 @@ export default class CameraScreen extends React.Component {
           >
             <TouchableOpacity
               style={[styles.flipButton, { flex: 0.1, alignSelf: 'flex-end' }]}
-              onPress={this.zoomIn.bind(this)}
+              onPress={() => zoomIn()}
             >
               <Text style={styles.flipText}> + </Text>
             </TouchableOpacity>
             <TouchableOpacity
               style={[styles.flipButton, { flex: 0.1, alignSelf: 'flex-end' }]}
-              onPress={this.zoomOut.bind(this)}
+              onPress={() => zoomOut()}
             >
               <Text style={styles.flipText}> - </Text>
             </TouchableOpacity>
             <TouchableOpacity
               style={[styles.flipButton, { flex: 0.25, alignSelf: 'flex-end' }]}
-              onPress={this.toggleFocus.bind(this)}
+              onPress={() => toggleFocus()}
             >
-              <Text style={styles.flipText}> AF : {this.state.autoFocus} </Text>
+              <Text style={styles.flipText}> AF : { state.autoFocus} </Text>
             </TouchableOpacity>
             <TouchableOpacity
               style={[styles.flipButton, styles.picButton, { flex: 0.3, alignSelf: 'flex-end' }]}
-              onPress={this.takePicture.bind(this)}
+              onPress={() => takePicture()}
             >
               <Text style={styles.flipText}> SNAP </Text>
             </TouchableOpacity>
           </View>
         </View>
-        {!!canDetectFaces && this.renderFaces()}
-        {!!canDetectFaces && this.renderLandmarks()}
-        {!!canDetectText && this.renderTextBlocks()}
-        {!!canDetectBarcode && this.renderBarcodes()}
+        {!!canDetectFaces && renderFaces()}
+        {!!canDetectFaces && renderLandmarks()}
+        {!!canDetectText && renderTextBlocks()}
+        {!!canDetectBarcode && renderBarcodes()}
       </RNCamera>
     );
   }
-
-  render() {
-    return <View style={styles.container}>{this.renderCamera()}</View>;
-  }
+  return (
+    <View style={styles.container}>{() => renderCamera()}</View>
+  );
 }
 
+export default CameraScreen;
+
 const styles = StyleSheet.create({
   container: {
     flex: 1,

src/RNCamera.js

@@ -1,5 +1,5 @@
 // @flow
-import React from 'react';
+import React, { useState, useCallback, useMemo, useRef, useEffect } from 'react';
 import PropTypes from 'prop-types';
 import {
   findNodeHandle,
@@ -342,159 +342,258 @@ const mapValues = (input, mapper) => {
   return result;
 };
 
-export default class Camera extends React.Component<PropsType, StateType> {
-  static Constants = {
-    Type: CameraManager.Type,
-    FlashMode: CameraManager.FlashMode,
-    AutoFocus: CameraManager.AutoFocus,
-    WhiteBalance: CameraManager.WhiteBalance,
-    VideoQuality: CameraManager.VideoQuality,
-    VideoCodec: CameraManager.VideoCodec,
-    BarCodeType: CameraManager.BarCodeType,
-    GoogleVisionBarcodeDetection: CameraManager.GoogleVisionBarcodeDetection,
-    FaceDetection: CameraManager.FaceDetection,
-    CameraStatus,
-    RecordAudioPermissionStatus: RecordAudioPermissionStatusEnum,
-    VideoStabilization: CameraManager.VideoStabilization,
-    Orientation: {
-      auto: 'auto',
-      landscapeLeft: 'landscapeLeft',
-      landscapeRight: 'landscapeRight',
-      portrait: 'portrait',
-      portraitUpsideDown: 'portraitUpsideDown',
+export const Constants = {
+  Type: CameraManager.Type,
+  FlashMode: CameraManager.FlashMode,
+  AutoFocus: CameraManager.AutoFocus,
+  WhiteBalance: CameraManager.WhiteBalance,
+  VideoQuality: CameraManager.VideoQuality,
+  VideoCodec: CameraManager.VideoCodec,
+  BarCodeType: CameraManager.BarCodeType,
+  GoogleVisionBarcodeDetection: CameraManager.GoogleVisionBarcodeDetection,
+  FaceDetection: CameraManager.FaceDetection,
+  CameraStatus,
+  RecordAudioPermissionStatus: RecordAudioPermissionStatusEnum,
+  VideoStabilization: CameraManager.VideoStabilization,
+  Orientation: {
+    auto: 'auto',
+    landscapeLeft: 'landscapeLeft',
+    landscapeRight: 'landscapeRight',
+    portrait: 'portrait',
+    portraitUpsideDown: 'portraitUpsideDown',
+  },
+};
+
+export const ConversionTables = {
+  type: CameraManager.Type,
+  flashMode: CameraManager.FlashMode,
+  exposure: CameraManager.Exposure,
+  autoFocus: CameraManager.AutoFocus,
+  whiteBalance: CameraManager.WhiteBalance,
+  faceDetectionMode: (CameraManager.FaceDetection || {}).Mode,
+  faceDetectionLandmarks: (CameraManager.FaceDetection || {}).Landmarks,
+  faceDetectionClassifications: (CameraManager.FaceDetection || {}).Classifications,
+  googleVisionBarcodeType: (CameraManager.GoogleVisionBarcodeDetection || {}).BarcodeType,
+  videoStabilizationMode: CameraManager.VideoStabilization || {},
+};
+
+export default function Camera(props) {
+  let _cameraRef = useRef((ref) => setReference(ref));
+  let _cameraHandle: ?number;
+  let _lastEvents: { [string]: string };
+  let _lastEventsTimes: { [string]: Date };
+  let _isMounted: boolean;
+
+  const [isAuthorized, setIsAuthorized] = useState<boolean>(false);
+  const [isAuthorizationChecked, setIsAuthorizationChecked] = useState<boolean>(false);
+  const [recordAudioPermissionStatus, setRecordAudioPermissionStatus] = useState(
+    RecordAudioPermissionStatusEnum.PENDING_AUTHORIZATION,
+  );
+
+  const convertProp = useMemo((value: *, key: string) => {
+    if (typeof value === 'string' && Camera.ConversionTables[key]) {
+      return Camera.ConversionTables[key][value];
+    }
+
+    return value;
+  }, []);
+  const convertNativeProps = useCallback(
+    (nativeProps: PropsType) => () => {
+      const { children, ...props } = nativeProps;
+      const newProps = mapValues(props, convertProp);
+
+      if (props.onBarCodeRead) {
+        newProps.barCodeScannerEnabled = true;
+      }
+
+      if (props.onGoogleVisionBarcodesDetected) {
+        newProps.googleVisionBarcodeDetectorEnabled = true;
+      }
+
+      if (props.onFacesDetected) {
+        newProps.faceDetectorEnabled = true;
+      }
+
+      if (props.onTextRecognized) {
+        newProps.textRecognizerEnabled = true;
+      }
+
+      if (Platform.OS === 'ios') {
+        delete newProps.googleVisionBarcodeMode;
+        delete newProps.ratio;
+      }
+
+      return newProps;
     },
-  };
-
-  // Values under keys from this object will be transformed to native options
-  static ConversionTables = {
-    type: CameraManager.Type,
-    flashMode: CameraManager.FlashMode,
-    exposure: CameraManager.Exposure,
-    autoFocus: CameraManager.AutoFocus,
-    whiteBalance: CameraManager.WhiteBalance,
-    faceDetectionMode: (CameraManager.FaceDetection || {}).Mode,
-    faceDetectionLandmarks: (CameraManager.FaceDetection || {}).Landmarks,
-    faceDetectionClassifications: (CameraManager.FaceDetection || {}).Classifications,
-    googleVisionBarcodeType: (CameraManager.GoogleVisionBarcodeDetection || {}).BarcodeType,
-    videoStabilizationMode: CameraManager.VideoStabilization || {},
-  };
-
-  static propTypes = {
-    ...ViewPropTypes,
-    zoom: PropTypes.number,
-    maxZoom: PropTypes.number,
-    ratio: PropTypes.string,
-    focusDepth: PropTypes.number,
-    onMountError: PropTypes.func,
-    onCameraReady: PropTypes.func,
-    onAudioInterrupted: PropTypes.func,
-    onAudioConnected: PropTypes.func,
-    onStatusChange: PropTypes.func,
-    onBarCodeRead: PropTypes.func,
-    onPictureTaken: PropTypes.func,
-    onPictureSaved: PropTypes.func,
-    onGoogleVisionBarcodesDetected: PropTypes.func,
-    onFacesDetected: PropTypes.func,
-    onTextRecognized: PropTypes.func,
-    onSubjectAreaChanged: PropTypes.func,
-    trackingEnabled: PropTypes.bool,
-    faceDetectionMode: PropTypes.number,
-    faceDetectionLandmarks: PropTypes.number,
-    faceDetectionClassifications: PropTypes.number,
-    barCodeTypes: PropTypes.arrayOf(PropTypes.string),
-    googleVisionBarcodeType: PropTypes.number,
-    googleVisionBarcodeMode: PropTypes.number,
-    type: PropTypes.oneOfType([PropTypes.string, PropTypes.number]),
-    cameraId: PropTypes.string,
-    flashMode: PropTypes.oneOfType([PropTypes.string, PropTypes.number]),
-    exposure: PropTypes.number,
-    whiteBalance: PropTypes.oneOfType([PropTypes.string, PropTypes.number]),
-    autoFocus: PropTypes.oneOfType([PropTypes.string, PropTypes.number, PropTypes.bool]),
-    autoFocusPointOfInterest: PropTypes.shape({ x: PropTypes.number, y: PropTypes.number }),
-    permissionDialogTitle: PropTypes.string,
-    permissionDialogMessage: PropTypes.string,
-    androidCameraPermissionOptions: Rationale,
-    androidRecordAudioPermissionOptions: Rationale,
-    notAuthorizedView: PropTypes.element,
-    pendingAuthorizationView: PropTypes.element,
-    captureAudio: PropTypes.bool,
-    keepAudioSession: PropTypes.bool,
-    useCamera2Api: PropTypes.bool,
-    playSoundOnCapture: PropTypes.bool,
-    videoStabilizationMode: PropTypes.oneOfType([PropTypes.string, PropTypes.number]),
-    pictureSize: PropTypes.string,
-    mirrorVideo: PropTypes.bool,
-    rectOfInterest: PropTypes.any,
-    defaultVideoQuality: PropTypes.oneOfType([PropTypes.string, PropTypes.number]),
-  };
-
-  static defaultProps: Object = {
-    zoom: 0,
-    maxZoom: 0,
-    ratio: '4:3',
-    focusDepth: 0,
-    type: CameraManager.Type.back,
-    cameraId: null,
-    autoFocus: CameraManager.AutoFocus.on,
-    flashMode: CameraManager.FlashMode.off,
-    exposure: -1,
-    whiteBalance: CameraManager.WhiteBalance.auto,
-    faceDetectionMode: (CameraManager.FaceDetection || {}).fast,
-    barCodeTypes: Object.values(CameraManager.BarCodeType),
-    googleVisionBarcodeType: ((CameraManager.GoogleVisionBarcodeDetection || {}).BarcodeType || {})
-      .None,
-    googleVisionBarcodeMode: ((CameraManager.GoogleVisionBarcodeDetection || {}).BarcodeMode || {})
-      .NORMAL,
-    faceDetectionLandmarks: ((CameraManager.FaceDetection || {}).Landmarks || {}).none,
-    faceDetectionClassifications: ((CameraManager.FaceDetection || {}).Classifications || {}).none,
-    permissionDialogTitle: '',
-    permissionDialogMessage: '',
-    androidCameraPermissionOptions: {
-      title: '',
-      message: '',
+    [],
+  );
+  const hasFaCC = useMemo(() => typeof props.children === 'function', [props.children]);
+  const setReference = useCallback(
+    (ref) => {
+      if (ref) {
+        _cameraHandle = findNodeHandle(ref);
+      } else {
+        _cameraRef = null;
+        _cameraHandle = null;
+      }
     },
-    androidRecordAudioPermissionOptions: {
-      title: '',
-      message: '',
+    [_cameraRef, _cameraHandle],
+  );
+  const _onMountError = useCallback(
+    ({ nativeEvent }: EventCallbackArgumentsType) => {
+      if (props.onMountError) {
+        props.onMountError(nativeEvent);
+      }
     },
-    notAuthorizedView: (
-      <View style={styles.authorizationContainer}>
-        <Text style={styles.notAuthorizedText}>Camera not authorized</Text>
-      </View>
-    ),
-    pendingAuthorizationView: (
-      <View style={styles.authorizationContainer}>
-        <ActivityIndicator size="small" />
-      </View>
-    ),
-    captureAudio: true,
-    keepAudioSession: false,
-    useCamera2Api: false,
-    playSoundOnCapture: false,
-    pictureSize: 'None',
-    videoStabilizationMode: 0,
-    mirrorVideo: false,
+    [props.onMountError],
+  );
+  const _onCameraReady = useCallback(() => {
+    if (props.onCameraReady) {
+      props.onCameraReady();
+    }
+  }, [props.onCameraReady]);
+  const _onAudioInterrupted = useCallback(() => {
+    if (props.onAudioInterrupted) {
+      props.onAudioInterrupted();
+    }
+  }, [props.onAudioInterrupted]);
+  const _onAudioConnected = useCallback(() => {
+    if (props.onAudioConnected) {
+      props.onAudioConnected();
+    }
+  }, [props.onAudioConnected]);
+  const _onObjectDetected = useCallback(
+    (callback: ?Function) => ({ nativeEvent }: EventCallbackArgumentsType) => {
+      const { type } = nativeEvent;
+      if (
+        _lastEvents[type] &&
+        _lastEventsTimes[type] &&
+        JSON.stringify(nativeEvent) === _lastEvents[type] &&
+        new Date() - _lastEventsTimes[type] < EventThrottleMs
+      ) {
+        return;
+      }
+
+      if (callback) {
+        callback(nativeEvent);
+        _lastEventsTimes[type] = new Date();
+        _lastEvents[type] = JSON.stringify(nativeEvent);
+      }
+    },
+    [],
+  );
+  const _onPictureSaved = useCallback(
+    ({ nativeEvent }: EventCallbackArgumentsType) => {
+      if (props.onPictureSaved) {
+        props.onPictureSaved(nativeEvent);
+      }
+    },
+    [props.onPictureSaved],
+  );
+  const _onSubjectAreaChanged = useCallback(
+    e => () => {
+      if (props.onSubjectAreaChanged) {
+        props.onSubjectAreaChanged(e);
+      }
+    },
+    [props.onSubjectAreaChanged],
+  );
+  const getStatus = useMemo(() => {
+    if (isAuthorizationChecked === false) {
+      return CameraStatus.PENDING_AUTHORIZATION;
+    }
+    return isAuthorized ? CameraStatus.READY : CameraStatus.NOT_AUTHORIZED;
+  }, [isAuthorizationChecked, isAuthorized]);
+  const renderChildren = useMemo(() => {
+    if (hasFaCC) {
+      return props.children({
+        camera: this,
+        status: getStatus,
+        recordAudioPermissionStatus: recordAudioPermissionStatus,
+      });
+    }
+    return props.children;
+  }, []);
+
+  const { style, ...nativeProps } = convertNativeProps(props);
+
+  const arePermissionsGranted = async () => {
+    const {
+      permissionDialogTitle,
+      permissionDialogMessage,
+      androidCameraPermissionOptions,
+      androidRecordAudioPermissionOptions,
+    } = props;
+
+    let cameraPermissions = androidCameraPermissionOptions;
+    let audioPermissions = androidRecordAudioPermissionOptions;
+    if (permissionDialogTitle || permissionDialogMessage) {
+      // eslint-disable-next-line no-console
+      console.warn(
+        'permissionDialogTitle and permissionDialogMessage are deprecated. Please use androidCameraPermissionOptions instead.',
+      );
+      cameraPermissions = {
+        ...cameraPermissions,
+        title: permissionDialogTitle,
+        message: permissionDialogMessage,
+      };
+      audioPermissions = {
+        ...audioPermissions,
+        title: permissionDialogTitle,
+        message: permissionDialogMessage,
+      };
+    }
+
+    const { hasCameraPermissions, hasRecordAudioPermissions } = await requestPermissions(
+      props.captureAudio,
+      CameraManager,
+      cameraPermissions,
+      audioPermissions,
+    );
+
+    const recordAudioPermissionStatus = hasRecordAudioPermissions
+      ? RecordAudioPermissionStatusEnum.AUTHORIZED
+      : RecordAudioPermissionStatusEnum.NOT_AUTHORIZED;
+    return { hasCameraPermissions, recordAudioPermissionStatus };
   };
 
-  _cameraRef: ?Object;
-  _cameraHandle: ?number;
-  _lastEvents: { [string]: string };
-  _lastEventsTimes: { [string]: Date };
-  _isMounted: boolean;
+  const refreshAuthorizationStatus = async () => {
+    const { hasCameraPermissions, recordAudioPermissionStatus } = await arePermissionsGranted();
+    if (_isMounted === false) {
+      return;
+    }
 
-  constructor(props: PropsType) {
-    super(props);
-    this._lastEvents = {};
-    this._lastEventsTimes = {};
-    this._isMounted = true;
-    this.state = {
-      isAuthorized: false,
-      isAuthorizationChecked: false,
-      recordAudioPermissionStatus: RecordAudioPermissionStatusEnum.PENDING_AUTHORIZATION,
-    };
-  }
+    setIsAuthorized(hasCameraPermissions);
+    setIsAuthorizationChecked(true);
+    setRecordAudioPermissionStatus(recordAudioPermissionStatus);
+  };
 
-  async takePictureAsync(options?: PictureOptions) {
+  const _onStatusChange = useCallback(() => {
+    if (props.onStatusChange) {
+      props.onStatusChange({
+        cameraStatus: getStatus(),
+        recordAudioPermissionStatus,
+      });
+    }
+  }, [props.onStatusChange]);
+
+  const stopRecording = useCallback(() => {
+    CameraManager.stopRecording(_cameraHandle);
+  }, [_cameraHandle]);
+
+  const pausePreview = useCallback(() => {
+    CameraManager.pausePreview(_cameraHandle);
+  }, [_cameraHandle]);
+
+  const isRecording = useCallback(() => {
+    return CameraManager.isRecording(_cameraHandle);
+  }, [_cameraHandle]);
+
+  const resumePreview = useCallback(() => {
+    CameraManager.resumePreview(_cameraHandle);
+  }, [_cameraHandle]);
+
+  const takePicture = async (options?: PictureOptions) => {
     if (!options) {
       options = {};
     }
@@ -519,35 +618,35 @@ export default class Camera extends React.Component<PropsType, StateType> {
       options.pauseAfterCapture = false;
     }
 
-    if (!this._cameraHandle) {
+    if (!_cameraHandle) {
       throw 'Camera handle cannot be null';
     }
 
-    return await CameraManager.takePicture(options, this._cameraHandle);
-  }
+    return await CameraManager.takePicture(options, _cameraHandle);
+  };
 
-  async getSupportedRatiosAsync() {
+  const getSupportedRatiosAsync = async () => {
     if (Platform.OS === 'android') {
-      return await CameraManager.getSupportedRatios(this._cameraHandle);
+      return await CameraManager.getSupportedRatios(_cameraHandle);
     } else {
       throw new Error('Ratio is not supported on iOS');
     }
-  }
+  };
 
-  async getCameraIdsAsync() {
+  const getCameraIdsAsync = async () => {
     if (Platform.OS === 'android') {
-      return await CameraManager.getCameraIds(this._cameraHandle);
+      return await CameraManager.getCameraIds(_cameraHandle);
     } else {
       return await CameraManager.getCameraIds(); // iOS does not need a camera instance
     }
-  }
-
-  getAvailablePictureSizes = async (): string[] => {
-    //$FlowFixMe
-    return await CameraManager.getAvailablePictureSizes(this.props.ratio, this._cameraHandle);
   };
 
-  async recordAsync(options?: RecordingOptions) {
+  const getAvailablePictureSizes = async (): string[] => {
+    //$FlowFixMe
+    return await CameraManager.getAvailablePictureSizes(props.ratio, _cameraHandle);
+  };
+
+  const recordAsync = async (options?: RecordingOptions) => {
     if (!options || typeof options !== 'object') {
       options = {};
     } else if (typeof options.quality === 'string') {
@@ -573,8 +672,7 @@ export default class Camera extends React.Component<PropsType, StateType> {
       }
     }
 
-    const { recordAudioPermissionStatus } = this.state;
-    const { captureAudio } = this.props;
+    const { captureAudio } = props;
 
     if (
       !captureAudio ||
@@ -593,269 +691,153 @@ export default class Camera extends React.Component<PropsType, StateType> {
       }
     }
 
-    return await CameraManager.record(options, this._cameraHandle);
-  }
-
-  stopRecording() {
-    CameraManager.stopRecording(this._cameraHandle);
-  }
-
-  pausePreview() {
-    CameraManager.pausePreview(this._cameraHandle);
-  }
-
-  isRecording() {
-    return CameraManager.isRecording(this._cameraHandle);
-  }
-
-  resumePreview() {
-    CameraManager.resumePreview(this._cameraHandle);
-  }
-
-  _onMountError = ({ nativeEvent }: EventCallbackArgumentsType) => {
-    if (this.props.onMountError) {
-      this.props.onMountError(nativeEvent);
-    }
+    return await CameraManager.record(options, _cameraHandle);
   };
 
-  _onCameraReady = () => {
-    if (this.props.onCameraReady) {
-      this.props.onCameraReady();
-    }
-  };
+  useEffect(() => {
+    async function getPermissionsAndSetState() {
+      const { hasCameraPermissions, recordAudioPermissionStatus } = await arePermissionsGranted();
+      if (_isMounted === false) {
+        return;
+      }
 
-  _onAudioInterrupted = () => {
-    if (this.props.onAudioInterrupted) {
-      this.props.onAudioInterrupted();
-    }
-  };
-
-  _onAudioConnected = () => {
-    if (this.props.onAudioConnected) {
-      this.props.onAudioConnected();
-    }
-  };
-
-  _onStatusChange = () => {
-    if (this.props.onStatusChange) {
-      this.props.onStatusChange({
-        cameraStatus: this.getStatus(),
-        recordAudioPermissionStatus: this.state.recordAudioPermissionStatus,
-      });
-    }
-  };
-
-  _onPictureSaved = ({ nativeEvent }: EventCallbackArgumentsType) => {
-    if (this.props.onPictureSaved) {
-      this.props.onPictureSaved(nativeEvent);
-    }
-  };
-
-  _onObjectDetected = (callback: ?Function) => ({ nativeEvent }: EventCallbackArgumentsType) => {
-    const { type } = nativeEvent;
-    if (
-      this._lastEvents[type] &&
-      this._lastEventsTimes[type] &&
-      JSON.stringify(nativeEvent) === this._lastEvents[type] &&
-      new Date() - this._lastEventsTimes[type] < EventThrottleMs
-    ) {
-      return;
+      setIsAuthorized(hasCameraPermissions);
+      setIsAuthorizationChecked(true);
+      setRecordAudioPermissionStatus(recordAudioPermissionStatus);
+      _onStatusChange();
     }
 
-    if (callback) {
-      callback(nativeEvent);
-      this._lastEventsTimes[type] = new Date();
-      this._lastEvents[type] = JSON.stringify(nativeEvent);
-    }
-  };
+    getPermissionsAndSetState();
 
-  _onSubjectAreaChanged = e => {
-    if (this.props.onSubjectAreaChanged) {
-      this.props.onSubjectAreaChanged(e);
-    }
-  };
+    return () => {
+      _isMounted = false;
+    };
+  }, []);
 
-  _setReference = (ref: ?Object) => {
-    if (ref) {
-      this._cameraRef = ref;
-      this._cameraHandle = findNodeHandle(ref);
-    } else {
-      this._cameraRef = null;
-      this._cameraHandle = null;
-    }
-  };
-
-  componentWillUnmount() {
-    this._isMounted = false;
-  }
-
-  async arePermissionsGranted() {
-    const {
-      permissionDialogTitle,
-      permissionDialogMessage,
-      androidCameraPermissionOptions,
-      androidRecordAudioPermissionOptions,
-    } = this.props;
-
-    let cameraPermissions = androidCameraPermissionOptions;
-    let audioPermissions = androidRecordAudioPermissionOptions;
-    if (permissionDialogTitle || permissionDialogMessage) {
-      // eslint-disable-next-line no-console
-      console.warn(
-        'permissionDialogTitle and permissionDialogMessage are deprecated. Please use androidCameraPermissionOptions instead.',
-      );
-      cameraPermissions = {
-        ...cameraPermissions,
-        title: permissionDialogTitle,
-        message: permissionDialogMessage,
-      };
-      audioPermissions = {
-        ...audioPermissions,
-        title: permissionDialogTitle,
-        message: permissionDialogMessage,
-      };
-    }
-
-    const { hasCameraPermissions, hasRecordAudioPermissions } = await requestPermissions(
-      this.props.captureAudio,
-      CameraManager,
-      cameraPermissions,
-      audioPermissions,
+  if (isAuthorized || hasFaCC) {
+    return (
+      <View style={style}>
+        <RNCamera
+          {...nativeProps}
+          style={StyleSheet.absoluteFill}
+          ref={cameraRef}
+          onMountError={_onMountError}
+          onCameraReady={_onCameraReady}
+          onAudioInterrupted={_onAudioInterrupted}
+          onAudioConnected={_onAudioConnected}
+          onGoogleVisionBarcodesDetected={_onObjectDetected(props.onGoogleVisionBarcodesDetected)}
+          onBarCodeRead={_onObjectDetected(props.onBarCodeRead)}
+          onFacesDetected={_onObjectDetected(props.onFacesDetected)}
+          onTextRecognized={_onObjectDetected(props.onTextRecognized)}
+          onPictureSaved={_onPictureSaved}
+          onSubjectAreaChanged={_onSubjectAreaChanged}
+        />
+        {renderChildren}
+      </View>
     );
-
-    const recordAudioPermissionStatus = hasRecordAudioPermissions
-      ? RecordAudioPermissionStatusEnum.AUTHORIZED
-      : RecordAudioPermissionStatusEnum.NOT_AUTHORIZED;
-    return { hasCameraPermissions, recordAudioPermissionStatus };
-  }
-
-  async refreshAuthorizationStatus() {
-    const {
-      hasCameraPermissions,
-      recordAudioPermissionStatus,
-    } = await this.arePermissionsGranted();
-    if (this._isMounted === false) {
-      return;
-    }
-
-    this.setState({
-      isAuthorized: hasCameraPermissions,
-      isAuthorizationChecked: true,
-      recordAudioPermissionStatus,
-    });
-  }
-
-  async componentDidMount() {
-    const {
-      hasCameraPermissions,
-      recordAudioPermissionStatus,
-    } = await this.arePermissionsGranted();
-    if (this._isMounted === false) {
-      return;
-    }
-
-    this.setState(
-      {
-        isAuthorized: hasCameraPermissions,
-        isAuthorizationChecked: true,
-        recordAudioPermissionStatus,
-      },
-      this._onStatusChange,
-    );
-  }
-
-  getStatus = (): Status => {
-    const { isAuthorized, isAuthorizationChecked } = this.state;
-    if (isAuthorizationChecked === false) {
-      return CameraStatus.PENDING_AUTHORIZATION;
-    }
-    return isAuthorized ? CameraStatus.READY : CameraStatus.NOT_AUTHORIZED;
-  };
-
-  // FaCC = Function as Child Component;
-  hasFaCC = (): * => typeof this.props.children === 'function';
-
-  renderChildren = (): * => {
-    if (this.hasFaCC()) {
-      return this.props.children({
-        camera: this,
-        status: this.getStatus(),
-        recordAudioPermissionStatus: this.state.recordAudioPermissionStatus,
-      });
-    }
-    return this.props.children;
-  };
-
-  render() {
-    const { style, ...nativeProps } = this._convertNativeProps(this.props);
-
-    if (this.state.isAuthorized || this.hasFaCC()) {
-      return (
-        <View style={style}>
-          <RNCamera
-            {...nativeProps}
-            style={StyleSheet.absoluteFill}
-            ref={this._setReference}
-            onMountError={this._onMountError}
-            onCameraReady={this._onCameraReady}
-            onAudioInterrupted={this._onAudioInterrupted}
-            onAudioConnected={this._onAudioConnected}
-            onGoogleVisionBarcodesDetected={this._onObjectDetected(
-              this.props.onGoogleVisionBarcodesDetected,
-            )}
-            onBarCodeRead={this._onObjectDetected(this.props.onBarCodeRead)}
-            onFacesDetected={this._onObjectDetected(this.props.onFacesDetected)}
-            onTextRecognized={this._onObjectDetected(this.props.onTextRecognized)}
-            onPictureSaved={this._onPictureSaved}
-            onSubjectAreaChanged={this._onSubjectAreaChanged}
-          />
-          {this.renderChildren()}
-        </View>
-      );
-    } else if (!this.state.isAuthorizationChecked) {
-      return this.props.pendingAuthorizationView;
-    } else {
-      return this.props.notAuthorizedView;
-    }
-  }
-
-  _convertNativeProps({ children, ...props }: PropsType) {
-    const newProps = mapValues(props, this._convertProp);
-
-    if (props.onBarCodeRead) {
-      newProps.barCodeScannerEnabled = true;
-    }
-
-    if (props.onGoogleVisionBarcodesDetected) {
-      newProps.googleVisionBarcodeDetectorEnabled = true;
-    }
-
-    if (props.onFacesDetected) {
-      newProps.faceDetectorEnabled = true;
-    }
-
-    if (props.onTextRecognized) {
-      newProps.textRecognizerEnabled = true;
-    }
-
-    if (Platform.OS === 'ios') {
-      delete newProps.googleVisionBarcodeMode;
-      delete newProps.ratio;
-    }
-
-    return newProps;
-  }
-
-  _convertProp(value: *, key: string): * {
-    if (typeof value === 'string' && Camera.ConversionTables[key]) {
-      return Camera.ConversionTables[key][value];
-    }
-
-    return value;
+  } else if (!isAuthorizationChecked) {
+    return props.pendingAuthorizationView;
+  } else {
+    return props.notAuthorizedView;
   }
 }
 
-export const Constants = Camera.Constants;
+Camera.propTypes = {
+  ...ViewPropTypes,
+  zoom: PropTypes.number,
+  maxZoom: PropTypes.number,
+  ratio: PropTypes.string,
+  focusDepth: PropTypes.number,
+  onMountError: PropTypes.func,
+  onCameraReady: PropTypes.func,
+  onAudioInterrupted: PropTypes.func,
+  onAudioConnected: PropTypes.func,
+  onStatusChange: PropTypes.func,
+  onBarCodeRead: PropTypes.func,
+  onPictureTaken: PropTypes.func,
+  onPictureSaved: PropTypes.func,
+  onGoogleVisionBarcodesDetected: PropTypes.func,
+  onFacesDetected: PropTypes.func,
+  onTextRecognized: PropTypes.func,
+  onSubjectAreaChanged: PropTypes.func,
+  trackingEnabled: PropTypes.bool,
+  faceDetectionMode: PropTypes.number,
+  faceDetectionLandmarks: PropTypes.number,
+  faceDetectionClassifications: PropTypes.number,
+  barCodeTypes: PropTypes.arrayOf(PropTypes.string),
+  googleVisionBarcodeType: PropTypes.number,
+  googleVisionBarcodeMode: PropTypes.number,
+  type: PropTypes.oneOfType([PropTypes.string, PropTypes.number]),
+  cameraId: PropTypes.string,
+  flashMode: PropTypes.oneOfType([PropTypes.string, PropTypes.number]),
+  exposure: PropTypes.number,
+  whiteBalance: PropTypes.oneOfType([PropTypes.string, PropTypes.number]),
+  autoFocus: PropTypes.oneOfType([PropTypes.string, PropTypes.number, PropTypes.bool]),
+  autoFocusPointOfInterest: PropTypes.shape({ x: PropTypes.number, y: PropTypes.number }),
+  permissionDialogTitle: PropTypes.string,
+  permissionDialogMessage: PropTypes.string,
+  androidCameraPermissionOptions: Rationale,
+  androidRecordAudioPermissionOptions: Rationale,
+  notAuthorizedView: PropTypes.element,
+  pendingAuthorizationView: PropTypes.element,
+  captureAudio: PropTypes.bool,
+  keepAudioSession: PropTypes.bool,
+  useCamera2Api: PropTypes.bool,
+  playSoundOnCapture: PropTypes.bool,
+  videoStabilizationMode: PropTypes.oneOfType([PropTypes.string, PropTypes.number]),
+  pictureSize: PropTypes.string,
+  mirrorVideo: PropTypes.bool,
+  rectOfInterest: PropTypes.any,
+  defaultVideoQuality: PropTypes.oneOfType([PropTypes.string, PropTypes.number]),
+};
+
+Camera.defaultProps = {
+  zoom: 0,
+  maxZoom: 0,
+  ratio: '4:3',
+  focusDepth: 0,
+  type: CameraManager.Type.back,
+  cameraId: null,
+  autoFocus: CameraManager.AutoFocus.on,
+  flashMode: CameraManager.FlashMode.off,
+  exposure: -1,
+  whiteBalance: CameraManager.WhiteBalance.auto,
+  faceDetectionMode: (CameraManager.FaceDetection || {}).fast,
+  barCodeTypes: Object.values(CameraManager.BarCodeType),
+  googleVisionBarcodeType: ((CameraManager.GoogleVisionBarcodeDetection || {}).BarcodeType || {})
+    .None,
+  googleVisionBarcodeMode: ((CameraManager.GoogleVisionBarcodeDetection || {}).BarcodeMode || {})
+    .NORMAL,
+  faceDetectionLandmarks: ((CameraManager.FaceDetection || {}).Landmarks || {}).none,
+  faceDetectionClassifications: ((CameraManager.FaceDetection || {}).Classifications || {}).none,
+  permissionDialogTitle: '',
+  permissionDialogMessage: '',
+  androidCameraPermissionOptions: {
+    title: '',
+    message: '',
+  },
+  androidRecordAudioPermissionOptions: {
+    title: '',
+    message: '',
+  },
+  notAuthorizedView: (
+    <View style={styles.authorizationContainer}>
+      <Text style={styles.notAuthorizedText}>Camera not authorized</Text>
+    </View>
+  ),
+  pendingAuthorizationView: (
+    <View style={styles.authorizationContainer}>
+      <ActivityIndicator size="small" />
+    </View>
+  ),
+  captureAudio: true,
+  keepAudioSession: false,
+  useCamera2Api: false,
+  playSoundOnCapture: false,
+  pictureSize: 'None',
+  videoStabilizationMode: 0,
+  mirrorVideo: false,
+};
 
 const RNCamera = requireNativeComponent('RNCamera', Camera, {
   nativeOnly: {
@@ -880,4 +862,4 @@ const RNCamera = requireNativeComponent('RNCamera', Camera, {
     renderToHardwareTextureAndroid: true,
     testID: true,
   },
-});
+});

src/index.js

@@ -1,6 +1,10 @@
 // @flow
-import RNCamera, { type Status as _CameraStatus } from './RNCamera';
+import RNCamera, {
+    type Status as _CameraStatus,
+    Constants as RNCConstants,
+    ConversionTables,
+  } from './RNCamera';  
 import FaceDetector from './FaceDetector';
 
 export type CameraStatus = _CameraStatus;
-export { RNCamera, FaceDetector };
+export { RNCamera, FaceDetector, RNCConstants, ConversionTables };

types/index.d.ts

@@ -94,13 +94,11 @@ type RecordAudioPermissionStatus = Readonly<
     NOT_AUTHORIZED: 'NOT_AUTHORIZED';
   }>
 >;
-type FaCC = (
-  params: {
+type FaCC = (params: {
     camera: RNCamera;
     status: keyof CameraStatus;
     recordAudioPermissionStatus: keyof RecordAudioPermissionStatus;
-  },
-) => JSX.Element;
+  }) => JSX.Element;
 
 export interface Constants {
   CameraStatus: CameraStatus;
@@ -135,7 +133,7 @@ export interface RNCameraProps {
   autoFocus?: keyof AutoFocus;
   autoFocusPointOfInterest?: Point;
   /* iOS only */
-  onSubjectAreaChanged?: (event: { nativeEvent: { prevPoint: { x: number; y: number; } } }) => void;
+  onSubjectAreaChanged?: (event: { nativeEvent: { prevPoint: { x: number; y: number } } }) => void;
   type?: keyof CameraType;
   flashMode?: keyof FlashMode;
   notAuthorizedView?: JSX.Element;
@@ -178,12 +176,12 @@ export interface RNCameraProps {
      * @description For Android use `{ width: number, height: number, origin: Array<Point<string>> }`
      * @description For iOS use `{ origin: Point<string>, size: Size<string> }`
      */
-    bounds: { width: number, height: number, origin: Array<Point<string>> } | { origin: Point<string>; size: Size<string> };
+    bounds:
+    | { width: number; height: number; origin: Array<Point<string>> }
+    | { origin: Point<string>; size: Size<string> };
   }): void;
 
-  onGoogleVisionBarcodesDetected?(event: {
-    barcodes: Barcode[];
-  }): void;
+  onGoogleVisionBarcodesDetected?(event: { barcodes: Barcode[] }): void;
 
   // -- FACE DETECTION PROPS
 
@@ -257,9 +255,9 @@ export interface Barcode {
     firstName?: string;
     lastName?: string;
     middleName?: string;
-    prefix?:string;
-    pronounciation?:string;
-    suffix?:string;
+    prefix?: string;
+    pronounciation?: string;
+    suffix?: string;
     formattedName?: string;
   };
   phone?: Phone;
@@ -298,29 +296,29 @@ export interface Barcode {
 }
 
 export type BarcodeType =
-  |"EMAIL"
-  |"PHONE"
-  |"CALENDAR_EVENT"
-  |"DRIVER_LICENSE"
-  |"GEO"
-  |"SMS"
-  |"CONTACT_INFO"
-  |"WIFI"
-  |"TEXT"
-  |"ISBN"
-  |"PRODUCT"
-  |"URL"
+  |'EMAIL'
+  |'PHONE'
+  |'CALENDAR_EVENT'
+  |'DRIVER_LICENSE'
+  |'GEO'
+  |'SMS'
+  |'CONTACT_INFO'
+  |'WIFI'
+  |'TEXT'
+  |'ISBN'
+  |'PRODUCT'
+  |'URL'
 
 export interface Email {
   address?: string;
   body?: string;
   subject?: string;
-  emailType?: "UNKNOWN" | "Work" | "Home";
+  emailType?: 'UNKNOWN' | 'Work' | 'Home';
 }
 
 export interface Phone {
   number?: string;
-  phoneType?: "UNKNOWN" | "Work" | "Home" | "Fax" | "Mobile";
+  phoneType?: 'UNKNOWN' | 'Work' | 'Home' | 'Fax' | 'Mobile';
 }
 
 export interface Face {
@@ -409,26 +407,8 @@ export interface RecordResponse {
   codec: VideoCodec[keyof VideoCodec];
 }
 
-export class RNCamera extends Component<RNCameraProps & ViewProperties> {
-  static Constants: Constants;
+export function RNCamera(props: RNCameraProps & ViewProperties): Component;
 
-  _cameraRef: null | NativeMethodsMixinStatic;
-  _cameraHandle: ReturnType<typeof findNodeHandle>;
-
-  takePictureAsync(options?: TakePictureOptions): Promise<TakePictureResponse>;
-  recordAsync(options?: RecordOptions): Promise<RecordResponse>;
-  refreshAuthorizationStatus(): Promise<void>;
-  stopRecording(): void;
-  pausePreview(): void;
-  resumePreview(): void;
-  getAvailablePictureSizes(): Promise<string[]>;
-
-  /** Android only */
-  getSupportedRatiosAsync(): Promise<string[]>;
-
-  /** iOS only */
-  isRecording(): Promise<boolean>;
-}
 
 interface DetectionOptions {
   mode?: keyof FaceDetectionMode;