refactor(ts): splitting up the module functions to a cleaner public api

src/__tests__/index.test.ts

@@ -3,9 +3,9 @@ import {
   decompressFile,
   getLz4VersionNumber,
   getLz4VersionString,
-  _global,
   type FileOperationResult,
 } from '../index';
+import { _global } from '../module';
 
 jest.mock('react-native', () => ({
   Platform: {

src/index.tsx

@@ -1,32 +1,9 @@
-import { NativeModules, Platform } from 'react-native';
 import { formatFilePath } from './utils/formatFilePath';
-import type { FileOperationResult, Lz4Type } from './types';
+import type { FileOperationResult } from './types';
+import { _global, Lz4 } from './module';
 
-const LINKING_ERROR =
-  `The package 'react-native-lz4' doesn't seem to be linked. Make sure: \n\n` +
-  Platform.select({ ios: "- You have run 'pod install'\n", default: '' }) +
-  '- You rebuilt the app after installing the package\n' +
-  '- You are not using Expo Go\n';
-
-// @ts-expect-error
-const isTurboModuleEnabled = global.__turboModuleProxy != null;
-
-const Lz4Module = isTurboModuleEnabled
-  ? require('./NativeLz4').default
-  : NativeModules.Lz4;
-
-const Lz4 = Lz4Module
-  ? Lz4Module
-  : new Proxy(
-      {},
-      {
-        get() {
-          throw new Error(LINKING_ERROR);
-        },
-      }
-    );
-
-export const _global = global as unknown as Lz4Type;
+// @TODO: it might not be needed to initialize the module in the index file
+// at all as it is being initialized in the Android and iOS layers. Could be removed in the future.
 
 /**
  * Initializes the Lz4 module.

src/module.ts

@@ -0,0 +1,28 @@
+import { NativeModules, Platform } from 'react-native';
+import type { Lz4Type } from './types';
+
+const LINKING_ERROR =
+  `The package 'react-native-lz4' doesn't seem to be linked. Make sure: \n\n` +
+  Platform.select({ ios: "- You have run 'pod install'\n", default: '' }) +
+  '- You rebuilt the app after installing the package\n' +
+  '- You are not using Expo Go\n';
+
+// @ts-expect-error
+const isTurboModuleEnabled = global.__turboModuleProxy != null;
+
+const Lz4Module = isTurboModuleEnabled
+  ? require('./NativeLz4').default
+  : NativeModules.Lz4;
+
+export const Lz4 = Lz4Module
+  ? Lz4Module
+  : new Proxy(
+      {},
+      {
+        get() {
+          throw new Error(LINKING_ERROR);
+        },
+      }
+    );
+
+export const _global = global as unknown as Lz4Type;