fix jest cfg

Author: pavelgj

genkit-tools/common/jest.config.ts

@@ -41,6 +41,10 @@ const config: Config = {
 
   // An array of regexp pattern strings that are matched against all source file paths, matched files will skip transformation
   transformIgnorePatterns: ['/node_modules/'],
+
+  moduleNameMapper: {
+    '^(\\.{1,2}/.*)\\.js$': '$1',
+  },
 };
 
 export default config;