SchemaValidationError

Custom error class thrown when Standard Schema validation fails in withJsonResponse. It has an issues property with the validation issues from the schema and a response property with the original Response object.

This error represents a schema rejection, not an HTTP failure. The request succeeded, but the response data did not match the expected schema.

Properties

• name ('SchemaValidationError')
• code ('ERR_SCHEMA_VALIDATION')
• issues (StandardSchemaV1Issue[]) - The validation issues from the schema.
• response (Response) - The original Response object. The body has already been consumed for JSON parsing.

Example

import {withJsonResponse, SchemaValidationError} from 'fetch-extras';
import {z} from 'zod';

const userSchema = z.object({name: z.string()});
const fetchUser = withJsonResponse({schema: userSchema})(fetch);

try {
	const user = await fetchUser('/api/user');
	console.log(user.name);
} catch (error) {
	if (error instanceof SchemaValidationError) {
		console.error(error.issues);
		console.log(error.response.status);
	}
}