message: cli: set NODE_ENV to test when running tests if not already set
diff: @@ -57,6 +57,12 @@ export default async (cmd: Command) => {
  }
  }
  + // This is the only thing that is not implemented by jest.run(), so we do it here instead
  + // https://github.com/facebook/jest/blob/cd8828f7bbec6e55b4df5e41e853a5133c4a3ee1/packages/jest-cli/bin/jest.js#L12
  + if (!process.env.NODE_ENV) {
  + (process.env as any).NODE_ENV = 'test';
  + }
  +
  // eslint-disable-next-line jest/no-jest-import
  await require('jest').run(args);
  };
  