Method _log

lib/core.js:647–667

(tags, data, channel = 'internal')

    }

    _log(tags, data, channel = 'internal') {

        if (!this.events.hasListeners('log')) {
            return;
        }

        if (!Array.isArray(tags)) {
            tags = [tags];
        }

        const timestamp = Date.now();
        const field = data instanceof Error ? 'error' : 'data';

        let event = { timestamp, tags, [field]: data, channel };

        if (typeof data === 'function') {
            event = () => ({ timestamp, tags, data: data(), channel });
        }

        this.events.emit({ name: 'log', tags, channel }, event);
    }
};