[PR #11943/38d49d24 backport][stable-12] yarn: add Alpine Linux support in integration tests (#12002)

yarn: add Alpine Linux support in integration tests (#11943)

* test(yarn): add Alpine Linux support via apk

Install nodejs and yarn via apk on Alpine, sharing the functional
test block with the existing non-Alpine (pre-built binary) path.
Extracts the test block into tests.yml to avoid duplication.

Fixes #4270



* fix(yarn): skip Node.js runtime warnings in stderr processing

Node.js 24 emits DeprecationWarning lines to stderr (e.g. for url.parse())
that are not JSON, causing _process_yarn_error to fail with "Unexpected
stderr output from Yarn". Skip lines starting with "(node:" before
attempting JSON parsing.



* test(yarn): add changelog fragment for #11943



* fix(yarn): only JSON-parse lines starting with '{' in stderr

Node.js 24 emits multi-line DeprecationWarnings to stderr (e.g. the hint
line "(Use `node --trace-deprecation ...`") that are not JSON and were
tripping the "Unexpected stderr output from Yarn" failure. Yarn's
structured output always starts with '{', so skip any line that doesn't.



* test(yarn): install sqlite on Alpine to fix nodejs 22 symbol error

On Alpine 3.21 nodejs 22 requires SQLite session extension symbols
(sqlite3session_*) that are not present in sqlite-libs; installing
the full sqlite package provides them.



* test(yarn): refresh apk cache and upgrade sqlite-libs before installing nodejs

The CI Alpine container may have a stale sqlite-libs that lacks the
session extension symbols (sqlite3session_*) required by nodejs 22+.
Force a cache refresh and upgrade sqlite-libs to the latest revision.



* fix(yarn): warn on non-JSON stderr lines instead of silently skipping

Non-JSON lines in stderr (e.g. Node.js runtime DeprecationWarnings) are
surfaced to the user via module.warn() rather than being silently ignored,
since their content and meaning are not known in advance.



* prefix yarn output line

* Update changelogs/fragments/11943-yarn-nodejs-runtime-warnings.yml



---------



(cherry picked from commit 38d49d240e)

Co-authored-by: Alexei Znamensky <103110+russoz@users.noreply.github.com>
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
Co-authored-by: Felix Fontein <felix@fontein.de>

plugins/modules/yarn.py

@@ -187,8 +187,13 @@ class Yarn:
 
     def _process_yarn_error(self, err):
         try:
-            # We need to filter for errors, since Yarn warnings are included in stderr
+            # We need to filter for errors, since Yarn warnings are included in stderr.
+            # Non-JSON lines (e.g. Node.js runtime warnings) are surfaced via module.warn()
+            # rather than treated as errors, since their meaning is unknown.
             for line in err.splitlines():
+                if not line.startswith("{"):
+                    self.module.warn(f"yarn stderr: {line}")
+                    continue
                 if json.loads(line)["type"] == "error":
                     self.module.fail_json(msg=err)
         except Exception: