Add type for react-native-permissions (#24793)

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

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+// Type definitions for react-native-permissions 1.1
+// Project: https://github.com/yonahforst/react-native-permissions
+// Definitions by: Vincent Langlet <https://github.com/vincentlanglet>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+type Status = 'authorized' | 'denied' | 'restricted' | 'undetermined';
+
+interface Rationale {
+    title: string;
+    message: string;
+}
+
+type CheckOptions = string | { type: string };
+
+type RequestOptions = string | { type: string, rationale?: Rationale };
+
+interface ReactNativePermissions {
+    canOpenSettings: () => Promise<boolean>;
+    openSettings: () => Promise<any>;
+    getTypes: () => string[];
+    check: (permission: string, options?: CheckOptions) => Promise<Status>;
+    request: (permission: string, options?: RequestOptions) => Promise<Status>;
+    checkMultiple: (permissions: string[]) => Promise<{ [key: string]: string }>;
+}
+
+declare const Permissions: ReactNativePermissions;
+
+export default Permissions;

types/react-native-permissions/react-native-permissions-tests.ts

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+import Permissions from 'react-native-permissions';
+
+const firstType = Permissions.getTypes()[0];
+
+Permissions.canOpenSettings().then();
+Permissions.openSettings().then();
+Permissions.check('geolocation').then();
+Permissions.request('geolocation').then();
+Permissions.checkMultiple(['geolocation', 'notification']).then();

types/react-native-permissions/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-permissions-tests.ts"
+    ]
+}

types/react-native-permissions/tslint.json

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