veritatisdoloremque/docs-exp/auth-types.autherrormap.md

Monorepo for the Firebase JavaScript SDK

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[Home](./index.md) &gt; [@firebase/auth-types](./auth-types.md) &gt; [AuthErrorMap](./auth-types.autherrormap.md)

## AuthErrorMap interface

A mapping of error codes to error messages.


While error messages are useful for debugging (providing verbose textual context around what went wrong), these strings take up a lot of space in the compiled code. When deploying code in production, using  will save you roughly 10k compressed/gzipped over . You can select the error map during initialization:

```javascript
initializeAuth(app, {errorMap: debugErrorMap})

```
When initializing Auth,  is default.

<b>Signature:</b>

```typescript
export interface AuthErrorMap 
```