prettier rules

package.json

@@ -5,7 +5,10 @@
   "main": "index.js",
   "scripts": {
     "build": "rm -Rf ./_out && tsc && cp package*.json ./_out && cp *.md ./_out && cp LICENSE ./_out && cp actions.png ./_out",
-    "test": "jest"
+    "test": "jest",
+    "format": "prettier --write packages/**/*.ts",
+    "format-check": "prettier --check packages/**/*.ts",
+    "audit-check": "npm audit --audit-level=moderate"
   },
   "repository": {
     "type": "git",
@@ -25,6 +28,7 @@
     "@types/jest": "^25.1.4",
     "@types/node": "^12.12.31",
     "jest": "^25.1.0",
+    "prettier": "^2.0.4",
     "proxy": "^1.0.1",
     "ts-jest": "^25.2.1",
     "typescript": "^3.8.3"