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winston
allows logging loose metadata that is not just a JSON object. However, due to the constraints of Elasticsearch'sdynamic
field for object datatypes,winston-elasticsearch
has to enforce (at least for the default Elasticsearch mapping template) thatmeta
is an object. Currently it does not. This leads to lost logs if just a single log has a concrete value rather than an object in metadata, because Elasticsearch will error out the bulk request.This PR just splats into a meta object which gets passed to the transformer.