const {
        code: installCode,
        // stderr: stderrCode,
        stdout,
      } = await exec(testMonorepoProjectDir, "yarn ts-dev-tools install");

      expect(stdout).toMatchSnapshot();
      // FIXME: installation ouput warnings due to create-react-app
      // expect(stderrCode).toBeFalsy();
      expect(installCode).toBe(0);

      const packageJson = PackageJson.fromDirPath(testMonorepoProjectDir);