diff --git a/node_modules/metro/src/lib/getPreludeCode.js b/node_modules/metro/src/lib/getPreludeCode.js
index 57e008e..b645266 100644
--- a/node_modules/metro/src/lib/getPreludeCode.js
+++ b/node_modules/metro/src/lib/getPreludeCode.js
@@ -42,7 +42,7 @@ function getPreludeCode(_ref) {
     "__BUNDLE_START_TIME__=this.nativePerformanceNow?nativePerformanceNow():Date.now()",
     `__DEV__=${String(isDev)}`
   ].concat(_toConsumableArray(formatExtraVars(extraVars)), [
-    "process=this.process||{}"
+    "process=process||this.process||global.process||{}"
   ]);
   return `var ${vars.join(",")};${processEnv(
     isDev ? "development" : "production"
diff --git a/node_modules/metro/src/lib/polyfills/require.js b/node_modules/metro/src/lib/polyfills/require.js
index 8c04756..d773811 100644
--- a/node_modules/metro/src/lib/polyfills/require.js
+++ b/node_modules/metro/src/lib/polyfills/require.js
@@ -114,11 +114,6 @@ function metroRequire(moduleId) {
         .map(id => (modules[id] ? modules[id].verboseName : "[unknown]")); // We want to show A -> B -> A:
 
       cycle.push(cycle[0]);
-      console.warn(
-        `Require cycle: ${cycle.join(" -> ")}\n\n` +
-          "Require cycles are allowed, but can result in uninitialized values. " +
-          "Consider refactoring to remove the need for a cycle."
-      );
     }
   }