test: Alias the older strong-mock

vitest doesn't seem to like importing it with the same name as the
project.

package.json

@@ -66,9 +66,9 @@
     "eslint-config-prettier": "~9.1.0",
     "eslint-plugin-prettier": "~5.2.1",
     "prettier": "~3.4.2",
+    "sm-old": "npm:[email protected]",
     "standard-version": "~9.5.0",
     "strip-ansi": "~7.1.0",
-    "strong-mock": "~8.0.1",
     "ts-node": "~10.9.2",
     "tslib": "~2.8.0",
     "tsup": "~8.3.5",

tests/old.ts

@@ -2,7 +2,7 @@
  * This is an older, battle tested version of strong-mock that we use to
  * test the current version.
  */
-import * as SM from 'strong-mock';
+import * as SM from 'sm-old';
 
 // Exporting manually instead of export * from because IntelliJ
 // can't autocomplete the import otherwise :(.

tsconfig.app.json

@@ -5,11 +5,10 @@
     "noEmit": true,
     "declaration": false,
 
-    "target": "ES6",
+    "target": "ES2019",
     "downlevelIteration": true,
 
     "types": [],
-    "lib": ["ES6", "ES2019"],
     "skipLibCheck": true,
 
     "strict": true,