global.process = { __proto__: process, pid: 123456 } Date.now = function () { return 1459875739796 } require('os').hostname = function () { return 'abcdefghijklmnopqr' } var pino = require(require.resolve('./../../')) var dest = pino.extreme(1) var logger = pino({}, dest) logger.info('hello') logger.info('world') dest.flushSync() process.exit(0)