fix(ts) make tsc (almost) not cry on native

Co-authored-by: Calinteodor <calin.chitu@8x8.com>
Co-authored-by: Robert Pintilii <robert.pin9@gmail.com>

react/features/prejoin/components/web/PrejoinThirdParty.js

@@ -0,0 +1,86 @@
+// @flow
+
+import React, { Component } from 'react';
+
+import { translate } from '../../../base/i18n';
+import { isVideoMutedByUser } from '../../../base/media';
+import { PreMeetingScreen } from '../../../base/premeeting';
+import { connect } from '../../../base/redux';
+import { getLocalJitsiVideoTrack } from '../../../base/tracks';
+import { isDeviceStatusVisible } from '../../functions';
+
+type Props = {
+
+    /**
+     * Indicates the className that needs to be applied.
+    */
+     className: string,
+
+    /**
+     * Flag signaling if the device status is visible or not.
+     */
+    deviceStatusVisible: boolean,
+
+    /**
+     * Flag signaling the visibility of camera preview.
+     */
+    showCameraPreview: boolean,
+
+    /**
+     * Used for translation.
+     */
+    t: Function,
+
+    /**
+     * The JitsiLocalTrack to display.
+     */
+    videoTrack: ?Object
+};
+
+
+/**
+ * This component is displayed before joining a meeting.
+ */
+class PrejoinThirdParty extends Component<Props> {
+    /**
+     * Implements React's {@link Component#render()}.
+     *
+     * @inheritdoc
+     * @returns {ReactElement}
+     */
+    render() {
+        const {
+            className,
+            deviceStatusVisible,
+            showCameraPreview,
+            videoTrack
+        } = this.props;
+
+        return (
+            <PreMeetingScreen
+                className = { `prejoin-third-party ${className}` }
+                showDeviceStatus = { deviceStatusVisible }
+                skipPrejoinButton = { false }
+                thirdParty = { true }
+                videoMuted = { !showCameraPreview }
+                videoTrack = { videoTrack } />
+        );
+    }
+}
+
+/**
+ * Maps (parts of) the redux state to the React {@code Component} props.
+ *
+ * @param {Object} state - The redux state.
+ * @param {Object} ownProps - The props passed to the component.
+ * @returns {Object}
+ */
+function mapStateToProps(state): Object {
+    return {
+        deviceStatusVisible: isDeviceStatusVisible(state),
+        showCameraPreview: !isVideoMutedByUser(state),
+        videoTrack: getLocalJitsiVideoTrack(state)
+    };
+}
+
+export default connect(mapStateToProps)(translate(PrejoinThirdParty));