facts.npm: check directory exists before cd-ing

Author: wowi42

src/pyinfra/facts/npm.py

@@ -30,7 +30,7 @@ def requires_command(self, directory=None) -> str:
     @override
     def command(self, directory=None):
         if directory:
-            return ("cd {0} && npm list -g --depth=0").format(directory)
+            return ("! test -d {0} || (cd {0} && npm list -g --depth=0)").format(directory)
         return "npm list -g --depth=0"
 
     @override

tests/facts/npm.NpmPackages/local_packages.json

@@ -1,6 +1,6 @@
 {
     "arg": "somedir",
-    "command": "cd somedir && npm list -g --depth=0",
+    "command": "! test -d somedir || (cd somedir && npm list -g --depth=0)",
     "requires_command": "npm",
     "output": [
         "├── [email protected]",