pino/test/types/pino.ts

super fast, all natural json logger

import { join } from 'node:path'
import { tmpdir } from 'node:os'
import pinoPretty from 'pino-pretty'
// Test both default ("Pino") and named ("pino") imports.
import Pino, { type LoggerOptions, type StreamEntry, pino, multistream, transport } from '../../pino'

const destination = join(
  tmpdir(),
  '_' + Math.random().toString(36).substr(2, 9)
)

// Single
const transport1 = transport({
  target: 'pino-pretty',
  options: { some: 'options for', the: 'transport' }
})
const logger = pino(transport1)
logger.setBindings({ some: 'bindings' })
logger.info('test2')
logger.flush()
const loggerDefault = Pino(transport1)
loggerDefault.setBindings({ some: 'bindings' })
loggerDefault.info('test2')
loggerDefault.flush()

const transport2 = transport({
  target: 'pino-pretty',
})
const logger2 = pino(transport2)
logger2.info('test2')
const logger2Default = Pino(transport2)
logger2Default.info('test2')

// Multiple

const transports = transport({
  targets: [
    {
      level: 'info',
      target: 'pino-pretty',
      options: { some: 'options for', the: 'transport' }
    },
    {
      level: 'trace',
      target: 'pino/file',
      options: { destination }
    }
  ]
})
const loggerMulti = pino(transports)
loggerMulti.info('test2')

// custom levels

const customLevels = {
  customDebug: 1,
  info: 2,
  customNetwork: 3,
  customError: 4,
}

type CustomLevels = keyof typeof customLevels

const pinoOpts = {
  useOnlyCustomLevels: true,
  customLevels,
  level: 'customDebug',
} satisfies LoggerOptions

const multistreamOpts = {
  dedupe: true,
  levels: customLevels
}

const streams: StreamEntry<CustomLevels>[] = [
  { level: 'customDebug', stream: pinoPretty() },
  { level: 'info', stream: pinoPretty() },
  { level: 'customNetwork', stream: pinoPretty() },
  { level: 'customError', stream: pinoPretty() },
]

const loggerCustomLevel = pino(pinoOpts, multistream(streams, multistreamOpts))
loggerCustomLevel.customDebug('test3')
loggerCustomLevel.info('test4')
loggerCustomLevel.customError('test5')
loggerCustomLevel.customNetwork('test6')
const loggerCustomLevelDefault = Pino(pinoOpts, multistream(streams, multistreamOpts))
loggerCustomLevelDefault.customDebug('test3')
loggerCustomLevelDefault.info('test4')
loggerCustomLevelDefault.customError('test5')
loggerCustomLevelDefault.customNetwork('test6')