Map native fatal to critical (#677)

Fixes #640
hynek · Nov 15, 2024 · 6a111d6 · 6a111d6
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -38,6 +38,11 @@ You can find our backwards-compatibility policy [here](https://github.com/hynek/
 
   [#669](https://github.com/hynek/structlog/pull/669)
 
+- The native `FilteringBoundLogger.fatal()` method now maps to the critical level, as it does in the standard library.
+  Note that the level is discouraged to use there, so we recommend to stick to `error()` or `critical()`.
+
+  [#677](https://github.com/hynek/structlog/pull/677)
+
 
 ## [24.4.0](https://github.com/hynek/structlog/compare/24.3.0...24.4.0) - 2024-07-17
 

diff --git a/src/structlog/_native.py b/src/structlog/_native.py
@@ -202,8 +202,8 @@ async def alog(
 
     meths["exception"] = exception
     meths["aexception"] = aexception
-    meths["fatal"] = meths["error"]
-    meths["afatal"] = meths["aerror"]
+    meths["fatal"] = meths["critical"]
+    meths["afatal"] = meths["acritical"]
     meths["warn"] = meths["warning"]
     meths["awarn"] = meths["awarning"]
     meths["msg"] = meths["info"]