fix: fix error type exports

src/index.ts

@@ -30,7 +30,9 @@ import {
   transformCredentialInput,
   transformPresentationInput,
 } from './converters'
-import { VC_ERROR, VC_JWT_ERROR } from './errors'
+import { VC_ERROR } from './validators'
+
+export { VC_ERROR, VC_JWT_ERROR } from './validators'
 
 export {
   Issuer,
@@ -49,7 +51,6 @@ export {
   transformPresentationInput,
   normalizeCredential,
   normalizePresentation,
-  VC_JWT_ERROR,
 }
 
 export {

src/validators.ts

@@ -2,7 +2,34 @@ import { DEFAULT_CONTEXT, DEFAULT_VC_TYPE, DEFAULT_VP_TYPE, JWT_FORMAT } from '.
 import { JwtCredentialSubject, DateType } from './types'
 import { VerifiableCredential } from '.'
 import { asArray } from './converters'
-import { VC_ERROR } from './errors'
+import { JWT_ERROR } from 'did-jwt'
+
+/**
+ * Error prefixes used for known verification failure cases related to the
+ * {@link https://www.w3.org/TR/vc-data-model/ | Verifiable Credential data model }
+ */
+export const enum VC_ERROR {
+  /**
+   * Thrown when the credential or presentation being verified does not conform to the data model defined by
+   * {@link https://www.w3.org/TR/vc-data-model/ | the spec}
+   */
+  SCHEMA_ERROR = 'schema_error',
+
+  /**
+   * Thrown when the input is not a JWT string
+   */
+  FORMAT_ERROR = 'format_error',
+
+  /**
+   * Thrown when verifying a presentation where `challenge` and/or `domain` don't match the expected values.
+   */
+  AUTH_ERROR = 'auth_error',
+}
+
+/**
+ * Known validation or verification error prefixes.
+ */
+export type VC_JWT_ERROR = VC_ERROR | JWT_ERROR
 
 // eslint-disable-next-line @typescript-eslint/no-explicit-any
 function isDateObject(input: any): input is Date {