Convert emojipicker to typescript

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

src/components/views/emojipicker/Preview.tsx

@@ -0,0 +1,52 @@
+/*
+Copyright 2019 Tulir Asokan <tulir@maunium.net>
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React from 'react';
+
+import {IEmoji} from "../../../emoji";
+
+interface IProps {
+    emoji: IEmoji;
+}
+
+class Preview extends React.PureComponent<IProps> {
+    render() {
+        const {
+            unicode = "",
+            annotation = "",
+            shortcodes: [shortcode = ""],
+        } = this.props.emoji || {};
+
+        return (
+            <div className="mx_EmojiPicker_footer mx_EmojiPicker_preview">
+                <div className="mx_EmojiPicker_preview_emoji">
+                    {unicode}
+                </div>
+                <div className="mx_EmojiPicker_preview_text">
+                    <div className="mx_EmojiPicker_name mx_EmojiPicker_preview_name">
+                        {annotation}
+                    </div>
+                    <div className="mx_EmojiPicker_shortcode">
+                        {shortcode}
+                    </div>
+                </div>
+            </div>
+        );
+    }
+}
+
+export default Preview;