Tolerates running TS from a non-owning directory

Author: arcanis

src/compiler/moduleNameResolver.ts

@@ -290,7 +290,9 @@ namespace ts {
         const pnpapi = getPnpApi();
 
         const currentPackage = pnpapi.findPackageLocator(`${currentDirectory}/`);
-        Debug.assert(!!currentPackage);
+        if (!currentPackage) {
+            return [];
+        }
 
         const {packageDependencies} = pnpapi.getPackageInformation(currentPackage!);
 
@@ -1645,8 +1647,9 @@ namespace ts {
 
     function checkPnpExternalLibraryImport(resolvedValue: Resolved) {
         const pnpApi = getPnpApi();
-
         const ownerPackage = pnpApi.findPackageLocator(resolvedValue.path);
+
+        // eslint-disable-next-line @typescript-eslint/no-unnecessary-type-assertion
         Debug.assert(!!ownerPackage);
 
         const rootLocators = pnpApi.getDependencyTreeRoots();