# Standard Error Appender This appender writes all log events to the standard error stream. # Configuration * `type` - `stderr` * `layout` - `object` (optional, defaults to colouredLayout) - see [layouts](layouts.md) # Example ```javascript log4js.configure({ appenders: { err: { type: 'stderr' } }, categories: { default: { appenders: ['err'], level: 'ERROR' } } }); ```