move to @types/vscode

package.json

@@ -647,11 +647,11 @@
   "devDependencies": {
     "@types/node": "^8.10.66",
     "@types/throttle-debounce": "^2.1.0",
+    "@types/vscode": "^1.56.0",
     "ts-loader": "^7.0.4",
     "tslint": "^5.8.0",
     "typescript": "^3.1.4",
     "vsce": "^1.75.0",
-    "vscode": "^1.1.25",
     "webpack": "^4.43.0",
     "webpack-cli": "^3.3.11",
     "webpack-merge": "^4.2.2"
@@ -660,11 +660,10 @@
     "build": "webpack --mode production",
     "vscode:prepublish": "npm run build",
     "watch": "webpack --mode development --watch",
-    "postinstall": "node ./node_modules/vscode/bin/install",
     "package": "vsce package"
   },
   "prettier": {
     "arrowParens": "avoid",
     "trailingComma": "none"
   }
-}
+}