Use stdout when requested to print the configuration

CHANGELOG.md

@@ -4,6 +4,7 @@
 
 - `[jest-runner]` Force parallel runs for watch mode, to avoid TTY freeze ([#6647](https://github.com/facebook/jest/pull/6647))
 - `[jest-cli]` properly reprint resolver errors in watch mode ([#6407](https://github.com/facebook/jest/pull/6407))
+- `[jest-cli]` Write configuration to stdout when the option was explicitly passed to Jest ([#6447](https://github.com/facebook/jest/pull/6447))
 
 ## 23.3.0
 

packages/jest-cli/src/cli/index.js

@@ -205,10 +205,13 @@ const printDebugInfoAndExitIfNeeded = (
   configs,
   outputStream,
 ) => {
-  if (argv.debug || argv.showConfig) {
+  if (argv.debug) {
     logDebugMessages(globalConfig, configs, outputStream);
+    return;
   }
+
   if (argv.showConfig) {
+    logDebugMessages(globalConfig, configs, process.stdout);
     exit(0);
   }
 };