How?

Create /path/to/my/project/.npmrc:

touch .npmrc

Update .npmrc with the configuration below:

engine-strict=true

Add package manager configuration to package.json:

{
  "engines": {
   "npm": "Please use Bun",
   "yarn": "Please use Bun",
   "pnpm": "Please use Bun",
   "bun": ">=1.0.19"
  }
}

Reference

• https://docs.npmjs.com/cli/v10/configuring-npm/npmrc
• https://www.freecodecamp.org/news/how-to-force-use-yarn-or-npm/