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Levels

Flare uses the standard syslog severity levels for logs. Each level has its own method on flare.logger. The following levels are available, from most to least severe:

Method	Description
`flare.logger.emergency(message, attributes?)`	System is unusable
`flare.logger.alert(message, attributes?)`	Action must be taken immediately
`flare.logger.critical(message, attributes?)`	Critical conditions
`flare.logger.error(message, attributes?)`	Error conditions
`flare.logger.warning(message, attributes?)`	Warning conditions
`flare.logger.notice(message, attributes?)`	Normal but significant condition
`flare.logger.info(message, attributes?)`	Informational messages
`flare.logger.debug(message, attributes?)`	Debug-level messages

flare.logger.debug('Cache miss',{key:'user:42'});flare.logger.warning('Retrying request',{attempt:2});flare.logger.critical('Payment provider unreachable');

Setting a minimum level

By default, every level is sent to Flare. Set minimumLogLevel to drop anything below a given severity:

flare.configure({enableLogs:true,minimumLogLevel:'warning',});

With the example above, only logs at warning or above (warning, error, critical, alert, emergency) are recorded. Calls to flare.logger.info() and flare.logger.debug() become no-ops.

Logs filtered out by minimumLogLevel are never buffered, so they cost nothing beyond the method call.

Introduction Attributes

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Setting a minimum level

URL: https://flareapp.io/docs/javascript/logs/levels

⇱ Levels | JavaScript | Documentation | Flare

Levels

Setting a minimum level