Fix noise in headless mode on STDOUT (#1184)

packages/core/src/utils/gitIgnoreParser.ts

@@ -49,7 +49,8 @@ export class GitIgnoreParser implements GitIgnoreFilter {
       .map((p) => p.trim())
       .filter((p) => p !== '' && !p.startsWith('#'));
     if (patterns.length > 0) {
-      console.log(
+      // Log the number of patterns loaded on STDERR so it doesn't clutter the output on STDOUT
+      console.error(
         `Loaded ${patterns.length} patterns from ${patternsFilePath}`,
       );
     }