Merge lab into refactor/settings-panel-modules

tests/test_settings_module_import_paths.py

@@ -0,0 +1,49 @@
+"""Relative imports in extracted settings modules must resolve on disk."""
+
+import re
+from pathlib import Path
+
+
+ROOT = Path(__file__).resolve().parents[1]
+SETTINGS = ROOT / "static" / "js" / "settings"
+
+_FROM_IMPORT = re.compile(r"""\bfrom\s+["']([^"']+)["']""")
+_DYNAMIC_IMPORT = re.compile(r"""\bimport\s*\(\s*["']([^"']+)["']\s*\)""")
+_SIDE_EFFECT_IMPORT = re.compile(
+    r"""^\s*import\s+["']([^"']+)["']""",
+    re.MULTILINE,
+)
+
+
+def _relative_specifiers(source: str) -> set[str]:
+    specs = {
+        *_FROM_IMPORT.findall(source),
+        *_DYNAMIC_IMPORT.findall(source),
+        *_SIDE_EFFECT_IMPORT.findall(source),
+    }
+    return {spec for spec in specs if spec.startswith(".")}
+
+
+def test_settings_relative_imports_resolve() -> None:
+    modules = sorted(SETTINGS.glob("*.js"))
+    assert modules, "settings module directory unexpectedly empty"
+
+    unresolved = []
+
+    for module in modules:
+        source = module.read_text(encoding="utf-8")
+
+        for spec in sorted(_relative_specifiers(source)):
+            clean = spec.split("?", 1)[0].split("#", 1)[0]
+            target = (module.parent / clean).resolve()
+
+            if not target.is_file():
+                unresolved.append(
+                    f"{module.relative_to(ROOT)}: {spec} -> "
+                    f"{target.relative_to(ROOT)}"
+                )
+
+    assert not unresolved, (
+        "relative imports from settings modules do not resolve:\n"
+        + "\n".join(unresolved)
+    )