Add type for react-native-version-number module (#24789)

types/react-native-version-number/index.d.ts

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+// Type definitions for react-native-version-number 0.3
+// Project: https://github.com/APSL/react-native-version-number
+// Definitions by: Vincent Langlet <https://github.com/VincentLanglet>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+interface VersionNumber {
+    appVersion?: string;
+    buildVersion?: string;
+    bundleIdentifier?: string;
+}
+
+declare const VersionNumber: VersionNumber;
+
+export default VersionNumber;

types/react-native-version-number/react-native-version-number-tests.ts

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+import VersionNumber from 'react-native-version-number';
+
+const FullVersionNumber: VersionNumber = {
+  appVersion: '1.0',
+  buildVersion: '42',
+  bundleIdentifier: 'com.foo.bar.MyApp',
+};
+
+const MissingAppVersionNumber: VersionNumber = {
+  buildVersion: '42',
+  bundleIdentifier: 'com.foo.bar.MyApp',
+};
+
+const MissingBuildVersionNumber: VersionNumber = {
+  appVersion: '1.0',
+  bundleIdentifier: 'com.foo.bar.MyApp',
+};
+
+const MissingBundleVersionNumber: VersionNumber = {
+  appVersion: '1.0',
+  buildVersion: '42',
+};

types/react-native-version-number/tsconfig.json

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

types/react-native-version-number/tslint.json

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