rename babel-transformer files from ts to tsx

Summary: group files rename

Reviewed By: passy

Differential Revision: D33889860

fbshipit-source-id: 888e173fc72b5e126c1e41324b6cae6be29274c5

desktop/babel-transformer/src/flipper-env.tsx

@@ -0,0 +1,44 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
+
+/**
+ * There are some env vars which affect transformations, so the Metro/Babel cache should be invalidated when at least one of them changed.
+ * They are used in get-cache-key.ts for cache key generation.
+ */
+type FlipperEnvVars = {
+  FLIPPER_FB?: string;
+  FLIPPER_TEST_RUNNER?: string;
+  FLIPPER_ELECTRON_VERSION?: string;
+  NODE_ENV?: string;
+  FLIPPER_FORCE_PUBLIC_BUILD?: string;
+};
+
+const flipperEnv = new Proxy(
+  {
+    FLIPPER_FB: undefined,
+    FLIPPER_TEST_RUNNER: undefined,
+    FLIPPER_ELECTRON_VERSION: undefined,
+    NODE_ENV: undefined,
+    FLIPPER_FORCE_PUBLIC_BUILD: undefined,
+  } as FlipperEnvVars,
+  {
+    get: function (obj, prop) {
+      if (typeof prop === 'string') {
+        return process.env[prop];
+      } else {
+        return (obj as any)[prop];
+      }
+    },
+    set: function () {
+      throw new Error('flipperEnv is read-only');
+    },
+  },
+);
+
+export default flipperEnv;