feat(nextjs): Allow for suppressing warning about missing global error handler file (#12369)

Author: lforst

packages/nextjs/src/config/webpack.ts

@@ -291,14 +291,18 @@ export function constructWebpackConfigFunction(
         globalErrorFile => fs.existsSync(path.join(appDirPath!, globalErrorFile)),
       );
 
-      if (!hasGlobalErrorFile && !showedMissingGlobalErrorWarningMsg) {
+      if (
+        !hasGlobalErrorFile &&
+        !showedMissingGlobalErrorWarningMsg &&
+        !process.env.SENTRY_SUPPRESS_GLOBAL_ERROR_HANDLER_FILE_WARNING
+      ) {
         // eslint-disable-next-line no-console
         console.log(
           `${chalk.yellow(
             'warn',
           )}  - It seems like you don't have a global error handler set up. It is recommended that you add a ${chalk.cyan(
             'global-error.js',
-          )} file with Sentry instrumentation so that React rendering errors are reported to Sentry. Read more: https://docs.sentry.io/platforms/javascript/guides/nextjs/manual-setup/#react-render-errors-in-app-router`,
+          )} file with Sentry instrumentation so that React rendering errors are reported to Sentry. Read more: https://docs.sentry.io/platforms/javascript/guides/nextjs/manual-setup/#react-render-errors-in-app-router (you can suppress this warning by setting SENTRY_SUPPRESS_GLOBAL_ERROR_HANDLER_FILE_WARNING=1 as environment variable)`,
         );
         showedMissingGlobalErrorWarningMsg = true;
       }