feat: isolate side effect imports

package.json

@@ -18,7 +18,8 @@
     "url": "https://github.com/mattuylee/vsc-sort-import/issues"
   },
   "engines": {
-    "vscode": "^1.0.0"
+    "vscode": "^1.0.0",
+    "node": "14"
   },
   "categories": [
     "Other"
@@ -46,7 +47,7 @@
   "devDependencies": {
     "@types/glob": "^7.1.3",
     "@types/mocha": "^8.0.4",
-    "@types/node": "^12.11.7",
+    "@types/node": "^14.0.0",
     "@types/vscode": "^1.0.0",
     "glob": "^7.1.6",
     "mocha": "^8.2.1",