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bunyan-adaptor

v6.0.1

Published

Maps the major Bunyan/Pino logging methods to custom methods

Downloads

19,778

Readme

Pino / Bunyan Adaptor

npm version npm downloads Module type: CJS+ESM Types in JS js-semistandard-style Follow @voxpelli@mastodon.social

Types and mapper for Pino / Bunyan logging methods.

Support Pino / Bunyan compatible loggers with fallback console.log().

BunyanLite – simplified Pino / Bunyan type subsets

Apart from the actual adapter, this module also ships with some useful generic TypeScript types, where BunyanLite is the most usable of them.

The BunyanLite type can be used wherever one wants to reference a basic Pino / Bunyan subset. That type can then be fulfilled by Pino, Bunyan, a logger created by this module or by another module implementing the same subset.

All Pino / Bunyan type subsets

  • BunyanLite – specifies the lite subset of the Bunyan interface that this module supports
  • BunyanLogMethod – specifies the very simple syntax for the individual log methods
  • BunyanChildMethod – specified the syntax of the child() method

Pino / Bunyan subset that's part of BunyanLite

  • .fatal()
  • .error()
  • .warn()
  • .info()
  • .debug()
  • .trace()
  • .child(data)

createLogger() – map any logger to BunyanLite subset

Simple CommonJS example:

const logger = require('bunyan-adaptor')({
  log: console.log.bind(console),
  error: console.error.bind(console),
});

logger.error('Warning');      // Uses console.error()
logger.info('Informational'); // Uses console.log()

Simple ESM example:

import createLogger from 'bunyan-adaptor';

const logger = createLogger({
  log: console.log.bind(console),
  error: console.error.bind(console),
});

logger.error('Warning');      // Uses console.error()
logger.info('Informational'); // Uses console.log()

Also available as a non-default export:

const { createLogger } = require('bunyan-adaptor');
import { createLogger } from 'bunyan-adaptor';

createLogger(options)

Maps options methods to all seven Bunyan log levels.

  • .fatal() – maps to options.fatal and fallbacks to options.error and options.log in that order
  • .error() – maps to options.error and fallbacks to options.log in that order
  • .warn() – maps to options.warn and fallbacks to options.log
  • .info() – maps to options.info and fallbacks to options.log
  • .debug() – maps to options.debug and fallbacks to options.verbose and options.log in that order
  • .trace() – maps to options.trace and fallbacks to options.verbose and options.log in that order

options.log itself fallbacks to console.log()

In addition to the above there's also support for:

  • .child(data) – used to create a child logger. Defaults to built in method, can be overriden using options.child

See also