Add workaround react-native#11975

- facebook/react-native#11975
- https://github.com/react-navigation/react-navigation/blob/master/examples/ReduxExample/rn-cli.config.js

Author: droibit

.watchmanconfig

@@ -1,14 +1 @@
-{
-  "ignore_dirs": [
-    ".git",
-    "node_modules",
-    ".gradle",
-    ".idea",
-    "gradle",
-    "build",
-    "example",
-    "android/.gradle",
-    "android/gradle",
-    "android/app/build"
-  ]
-}
+{}

example/rn-cli.config.js

@@ -0,0 +1,51 @@
+/**
+ * @noflow
+ */
+
+const fs = require('fs');
+const path = require('path');
+const blacklist = require('metro/src/blacklist');
+
+module.exports = {
+  getBlacklistRE() {
+    return blacklist([
+      /react\-native\-custom\-tabs\/node_modules\/react-native\/(.*)/,
+      /react\-native\-custom\-tabs\/node_modules\/react\/(.*)/,
+    ]);
+  },
+  extraNodeModules: getNodeModulesForDirectory(path.resolve('.')),
+};
+
+function getNodeModulesForDirectory(rootPath) {
+  const nodeModulePath = path.join(rootPath, 'node_modules');
+  const folders = fs.readdirSync(nodeModulePath);
+  return folders.reduce((modules, folderName) => {
+    const folderPath = path.join(nodeModulePath, folderName);
+    if (folderName.startsWith('@')) {
+      const scopedModuleFolders = fs.readdirSync(folderPath);
+      const scopedModules = scopedModuleFolders.reduce(
+        (scopedModules, scopedFolderName) => {
+          scopedModules[
+            `${folderName}/${scopedFolderName}`
+          ] = maybeResolveSymlink(path.join(folderPath, scopedFolderName));
+          return scopedModules;
+        },
+        {}
+      );
+      return Object.assign({}, modules, scopedModules);
+    }
+    modules[folderName] = maybeResolveSymlink(folderPath);
+    return modules;
+  }, {});
+}
+
+function maybeResolveSymlink(maybeSymlinkPath) {
+  if (fs.lstatSync(maybeSymlinkPath).isSymbolicLink()) {
+    const resolved = path.resolve(
+      path.dirname(maybeSymlinkPath),
+      fs.readlinkSync(maybeSymlinkPath)
+    );
+    return resolved;
+  }
+  return maybeSymlinkPath;
+}