[Yahiro025]

Problem

profiler.done() drops the logger's defaultMeta. Finishing a timer logs the message and duration, but not the metadata configured on the logger (#2162).

Root cause

Profiler#done builds the info object and calls logger.write() directly. defaultMeta is applied in Logger#log, not in write.

Fix

Merge defaultMeta underneath that info object before write. Fields passed to done(), including level and durationMs, still win.

Tests

test/unit/winston/profiler.test.js checks that service from defaultMeta is present and that an explicit message overrides a default message. That assertion fails on master and passes with this change. The existing profiler tests still pass.

Scope

lib/winston/profiler.js only.

Fixes #2162