Introducing graphql-complexity-validation

Source: Dev.to

✨ Features

• Zero runtime dependencies
• Fully typed (TypeScript)
• Supports fragments & inline fragments
• Introspection ignored by default

Works with

• Apollo Server
• GraphQL Yoga
• Envelop
• NestJS

📦 Installation

npm install graphql-complexity-validation

🧠 How it works

• Each field has a cost (default: 1).
• Nested fields accumulate cost recursively.
• If the total exceeds the configured maximum, validation fails.

Additional notes

• No directives.
• No schema traversal.
• No framework lock‑in.

🧪 Example

createComplexityLimitRule({
  maxComplexity: 20,
  fieldCosts: {
    posts: 3,
    comments: 2,
  },
});

🔗 Links

• npm:
• GitHub:

Feedback, issues, and contributions are welcome 🙌
If you find it useful, please consider starring the repo ⭐