logger
This is a log library for ABT Node.
Enable logging first
Set the environments: process.env.ABT_NODE_LOG_DIR = {logging directory}.
Write to files
Set the environments: process.env.NODE_ENV = 'production'.
Writing to console
DEBUG=@abtnode/* npm run xxx.
Or, the logs will be write to stdout.
Rotate log files
Rotate log files every day, log filename formate {label}-YYYY-MM-DD.log.
[!Important] Default retained log files
Because it is for internal use, the default log is kept for 60 days.
Usage
const logger = require('@abtnode/logger')('@blocklet/cli');
// log info
logger.info('detail blocklet', { did: 'z8iZpWP3gto8RWk9UHfvAaYtqX5wZ3Mz9BrHA' });
// [2020-08-12 17:26:28] [info] "detail blocklet" {"did":"z8iZpWP3gto8RWk9UHfvAaYtqX5wZ3Mz9BrHA"}
// log error: must pass an object
logger.info('this is an error', { error: new Error('test') });