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saveToFile

You might also want to keep log from previous runs, all you need to do is tell better-logging where you want to store the logs:
require('better-logging')(console, {
saveToFile: `${Date.now()}.log`,
});
console.logLevel = 3;
console.debug('foo'); // won't log to console, but will be saved in 1594897100267.log
console.log('foo'); // logged to console & saved in 1594897100267.log
console.info('foo'); // logged to console & saved in 1594897100267.log
console.warn('foo'); // logged to console & saved in 1594897100267.log
console.error('foo'); // logged to console & saved in 1594897100267.log
console.line('foo'); // logged to console, but "line" is never saved in logs