Error cause Errors can now be optionally constructed with a cause option, pointing to another error. This adds a cause property on the new error: const error1 = new Error('Error one'); const error2 = new Error('Error two', { cause: error1 }); // error2.cause === error1 Contributed by Michaël Zasso - #39947 Other Notable Changes [34c627e4bc] - (SEMVER-MINOR) crypto: add RSA-PSS params to asymmetric