global.process = { __proto__: process, pid: 123456 } Date.now = function () { return 1459875739796 } require('os').hostname = function () { return 'abcdefghijklmnopqr' } var pino = require(require.resolve('./../../')) var extreme = pino(pino.extreme()) pino.final(extreme, (_, logger) => logger.info('h'))()