Fix BigInt Error in Vue

What Is the BigInt Error?

Struggling with BigInt in your Vue project? This common error has a straightforward fix once you understand the cause.

Why It Happens

This error occurs when BigInt values are used in contexts that don't support them, like JSON.stringify() or mixed arithmetic with regular numbers.

The Fix

const data = { id: 123456789012345678n };

// ❌ Throws: Do not know how to serialize a BigInt
// JSON.stringify(data);

// ✅ Custom replacer converts BigInt to string
JSON.stringify(data, (key, value) =>
  typeof value === 'bigint' ? value.toString() : value
);

Additional Context

The BigInt error in Vue is particularly common in applications that handle asynchronous operations or external service integrations. As your application scales, this error may appear more frequently due to increased concurrent requests or resource contention. Implementing proper error boundaries, health checks, and circuit breakers can significantly reduce the impact when this error occurs. Regular load testing helps identify these issues before they affect real users.

Prevention

Use [Bugsly](https://bugsly.dev) to monitor your app and capture errors like this automatically with actionable context.

Key Takeaways

• Always handle this error gracefully with proper error handling
• Check your environment configuration
• Test thoroughly before deploying to production