Replace Yarn

packages/platform-ios/native_modules.rb

@@ -5,14 +5,35 @@
 #
 require 'pathname'
 
-def use_native_modules!(config = nil)
+# Since CLI is a React Native dependency, we start looking for its 
+# executable from React Native `node_modules`.
+def get_cli_path()
+  script = '
+    const path = require("path");
+
+    const rnPath = path.dirname(require.resolve("react-native/package.json"));
+
+    console.log(
+      require.resolve("@react-native-community/cli/build/index.js", {
+        paths: [rnPath]
+      })
+    );
+  ';
+
+  Pod::Executable.execute_command("node", ["-e", script], true).strip
+end
+
+def use_native_modules!(root = "..", config = nil)
   if (!config)
     json = []
 
-    # @todo: Do not use Yarn here, but find path dynamically
-    IO.popen("yarn run --silent react-native config") do |data|
-      while line = data.gets
-        json << line
+    # Make sure `react-native config` is ran from the project root
+    # @todo: deprecate `root` and switch to Yarn once `--silent` flag works
+    Dir.chdir(root) do
+      IO.popen("node #{get_cli_path} config") do |data|
+        while line = data.gets
+          json << line
+        end
       end
     end