fixed incorrect package versions

package.json

@@ -28,7 +28,7 @@
   },
   "homepage": "https://github.com/screepers/screeps-typescript-starter#readme",
   "engines": {
-    "node": "10.x"
+    "node": "10.x || 12.x"
   },
   "devDependencies": {
     "@rollup/plugin-commonjs": "^11.1.0",
@@ -51,17 +51,17 @@
     "eslint-plugin-prettier": "^3.1.1",
     "lodash": "^3.10.1",
     "mocha": "^5.2.0",
-    "prettier": "^1.19.1",
-    "rollup": "^0.63.4",
-    "rollup-plugin-buble": "^0.19.4",
+    "prettier": "^2.0.4",
+    "rollup": "^2.6.1",
+    "rollup-plugin-buble": "^0.19.8",
     "rollup-plugin-clear": "^2.0.7",
     "rollup-plugin-nodent": "^0.2.2",
     "rollup-plugin-screeps": "^1.0.0",
     "rollup-plugin-typescript2": "^0.27.0",
     "sinon": "^6.3.5",
     "sinon-chai": "^3.2.0",
-    "ts-node": "^7.0.1",
-    "typescript": "^3.7.5"
+    "ts-node": "^8.8.2",
+    "typescript": "^3.8.3"
   },
   "dependencies": {
     "source-map": "~0.6.1"