global.process = { __proto__: process, pid: 123456 } Date.now = function () { return 1459875739796 } require('os').hostname = function () { return 'abcdefghijklmnopqr' } const pino = require(require.resolve('./../../../')) const log = pino({ prettyPrint: true }).child({ foo: 123 }) log.info('before') log.setBindings({ foo: 456, bar: 789 }) log.info('after')