FailWriter is an io.Writer that always returns an error.

A Flusher is a spy for the Flush portion of zap.WriteFlusher.

ShortWriter is an io.Writer that never returns an error, but doesn't write the last byte of the input.

A Syncer is a spy for the Sync portion of zap.WriteSyncer.

WriteFlusher is a concrete type that implements zap.WriteFlusher.

A WriteFlushSyncer implements both zap.WriteFlusher and zap.WriteSyncer.

WriteSyncer is a concrete type that implements zap.WriteSyncer.