Add type definition for react-native-navbar (#27412)

types/react-native-navbar/index.d.ts

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+// Type definitions for react-native-navbar 2.1
+// Project: https://github.com/react-native-community/react-native-navbar
+// Definitions by: Ryo Kikuchi <https://github.com/ryokik>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.6
+
+import * as React from 'react';
+import { ViewStyle, TextProps } from 'react-native';
+
+export interface NavigationBarButton {
+    title: string;
+    style?: ViewStyle;
+    handler?: () => void;
+    disable?: boolean;
+}
+
+export interface NavigationBarTitle {
+    title: string;
+    tintColor?: string;
+    ellipsizeMode?: TextProps["ellipsizeMode"];
+    numberOfLines?: number;
+}
+
+export interface StatusBar {
+    style?: 'light-content' | 'default';
+    hidden?: boolean;
+    tintColor?: string;
+    hideAnimation?: 'fade' | 'slide' | 'none';
+    showAnimation?: 'fade' | 'slide' | 'none';
+}
+
+export interface NavigationBarProps {
+    style?: ViewStyle;
+    tintColor?: string;
+    statusBar?: StatusBar;
+    leftButton?: NavigationBarButton | React.ReactElement<any> | null;
+    rightButton?: NavigationBarButton | React.ReactElement<any> | null;
+    title?: NavigationBarTitle | React.ReactElement<any> | null;
+}
+
+export default class NavigationBar extends React.Component<NavigationBarProps> {}

types/react-native-navbar/react-native-navbar-tests.tsx

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+import * as React from "react";
+import { View, Text } from "react-native";
+import NavigationBar from "react-native-navbar";
+
+class NavigationBarTest extends React.Component {
+    render() {
+        return (
+            <View>
+                <NavigationBar tintColor={'red'} leftButton={{
+                    title: "Back",
+                    handler: () => { console.log("Back"); },
+                }}
+                    rightButton={<Text>Next</Text>}
+                    title={null}
+                />
+            </View>
+        );
+    }
+}

types/react-native-navbar/tsconfig.json

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+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "jsx": "react-native",
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "strictFunctionTypes": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "react-native-navbar-tests.tsx"
+    ]
+}

types/react-native-navbar/tslint.json

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+{ "extends": "dtslint/dt.json" }