Add toggle to unpatch global console

Author: Jchinonso

packages/shared/ConsolePatchingDev.js

@@ -20,71 +20,76 @@ let prevError;
 let prevGroup;
 let prevGroupCollapsed;
 let prevGroupEnd;
+let enableDoubleLogging = global.__REACT_DEVTOOLS_ENABLE_DOUBLE_LOGGING__;
 
 function disabledLog() {}
 disabledLog.__reactDisabledLog = true;
 
 export function disableLogs(): void {
   if (__DEV__) {
-    if (disabledDepth === 0) {
-      /* eslint-disable react-internal/no-production-logging */
-      prevLog = console.log;
-      prevInfo = console.info;
-      prevWarn = console.warn;
-      prevError = console.error;
-      prevGroup = console.group;
-      prevGroupCollapsed = console.groupCollapsed;
-      prevGroupEnd = console.groupEnd;
-      // https://github.com/facebook/react/issues/19099
-      const props = {
-        configurable: true,
-        enumerable: true,
-        value: disabledLog,
-        writable: true,
-      };
-      // $FlowFixMe Flow thinks console is immutable.
-      Object.defineProperties(console, {
-        info: props,
-        log: props,
-        warn: props,
-        error: props,
-        group: props,
-        groupCollapsed: props,
-        groupEnd: props,
-      });
-      /* eslint-enable react-internal/no-production-logging */
+    if (!enableDoubleLogging) {
+      if (disabledDepth === 0) {
+        /* eslint-disable react-internal/no-production-logging */
+        prevLog = console.log;
+        prevInfo = console.info;
+        prevWarn = console.warn;
+        prevError = console.error;
+        prevGroup = console.group;
+        prevGroupCollapsed = console.groupCollapsed;
+        prevGroupEnd = console.groupEnd;
+        // https://github.com/facebook/react/issues/19099
+        const props = {
+          configurable: true,
+          enumerable: true,
+          value: disabledLog,
+          writable: true,
+        };
+        // $FlowFixMe Flow thinks console is immutable.
+        Object.defineProperties(console, {
+          info: props,
+          log: props,
+          warn: props,
+          error: props,
+          group: props,
+          groupCollapsed: props,
+          groupEnd: props,
+        });
+        /* eslint-enable react-internal/no-production-logging */
+      }
+      disabledDepth++;
     }
-    disabledDepth++;
   }
 }
 
 export function reenableLogs(): void {
   if (__DEV__) {
-    disabledDepth--;
-    if (disabledDepth === 0) {
-      /* eslint-disable react-internal/no-production-logging */
-      const props = {
-        configurable: true,
-        enumerable: true,
-        writable: true,
-      };
-      // $FlowFixMe Flow thinks console is immutable.
-      Object.defineProperties(console, {
-        log: {...props, value: prevLog},
-        info: {...props, value: prevInfo},
-        warn: {...props, value: prevWarn},
-        error: {...props, value: prevError},
-        group: {...props, value: prevGroup},
-        groupCollapsed: {...props, value: prevGroupCollapsed},
-        groupEnd: {...props, value: prevGroupEnd},
-      });
-      /* eslint-enable react-internal/no-production-logging */
-    }
-    if (disabledDepth < 0) {
-      console.error(
-        'disabledDepth fell below zero. ' +
-          'This is a bug in React. Please file an issue.',
-      );
+    if (!enableDoubleLogging) {
+      disabledDepth--;
+      if (disabledDepth === 0) {
+        /* eslint-disable react-internal/no-production-logging */
+        const props = {
+          configurable: true,
+          enumerable: true,
+          writable: true,
+        };
+        // $FlowFixMe Flow thinks console is immutable.
+        Object.defineProperties(console, {
+          log: {...props, value: prevLog},
+          info: {...props, value: prevInfo},
+          warn: {...props, value: prevWarn},
+          error: {...props, value: prevError},
+          group: {...props, value: prevGroup},
+          groupCollapsed: {...props, value: prevGroupCollapsed},
+          groupEnd: {...props, value: prevGroupEnd},
+        });
+        /* eslint-enable react-internal/no-production-logging */
+      }
+      if (disabledDepth < 0) {
+        console.error(
+          'disabledDepth fell below zero. ' +
+            'This is a bug in React. Please file an issue.',
+        );
+      }
     }
   }
 }