A strategy to automatically install @types definitely-typed at postinstall script using "npx typesync"

package.json

{
  "name": "npm-scripts-fun",
  "version": "1.0.0",
  "main": "index.js",
  "license": "MIT",
  "scripts": {
    "postinstall": "npx typesync && git diff --exit-code --quiet HEAD package.json || yarn --ignore-scripts"
  },
  "dependencies": {
    "react": "^16.8.6"
  },
  "devDependencies": {
    "@types/react": "^16.8.13"
  }
}