chore: Add mode option to override how encodeJsonToURI should function, not only depending on versions, but also allowing to provide the mode explicitly. refs #70

nklomp · nklomp · commit 1114e8308ee4 · 2023-10-15T00:29:21.000+02:00
diff --git a/packages/callback-example/CHANGELOG.md b/packages/callback-example/CHANGELOG.md
@@ -7,28 +7,15 @@ See [Conventional Commits](https://conventionalcommits.org) for commit guideline
 
 **Note:** Version bump only for package @sphereon/oid4vci-callback-example
 
-
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-
 ## [0.7.2](https://github.com/Sphereon-Opensource/OID4VCI/compare/v0.7.1...v0.7.2) (2023-09-28)
 
 **Note:** Version bump only for package @sphereon/oid4vci-callback-example
 
-
-
-
-
 ## [0.7.1](https://github.com/Sphereon-Opensource/OID4VCI/compare/v0.7.0...v0.7.1) (2023-09-28)
 
-
 ### Bug Fixes
 
-* Better match credential offer types and formats onto issuer metadata ([4044c21](https://github.com/Sphereon-Opensource/OID4VCI/commit/4044c2175b4cbee16f44c8bb5499bba249ca4993))
-
-
-
-
+- Better match credential offer types and formats onto issuer metadata ([4044c21](https://github.com/Sphereon-Opensource/OID4VCI/commit/4044c2175b4cbee16f44c8bb5499bba249ca4993))
 
 # [0.7.0](https://github.com/Sphereon-Opensource/OID4VCI/compare/v0.6.0...v0.7.0) (2023-08-19)
 
diff --git a/packages/client/CHANGELOG.md b/packages/client/CHANGELOG.md
@@ -7,34 +7,20 @@ See [Conventional Commits](https://conventionalcommits.org) for commit guideline
 
 **Note:** Version bump only for package @sphereon/oid4vci-client
 
-
-
-
-
 ## [0.7.2](https://github.com/Sphereon-Opensource/OID4VCI/compare/v0.7.1...v0.7.2) (2023-09-28)
 
-
 ### Bug Fixes
 
-* id lookup against server metadata not working ([592ec4b](https://github.com/Sphereon-Opensource/OID4VCI/commit/592ec4b837898eb3022d19479d79b6065e7a0d9e))
-
-
-
-
+- id lookup against server metadata not working ([592ec4b](https://github.com/Sphereon-Opensource/OID4VCI/commit/592ec4b837898eb3022d19479d79b6065e7a0d9e))
 
 ## [0.7.1](https://github.com/Sphereon-Opensource/OID4VCI/compare/v0.7.0...v0.7.1) (2023-09-28)
 
-
 ### Bug Fixes
 
-* Better match credential offer types and formats onto issuer metadata ([4044c21](https://github.com/Sphereon-Opensource/OID4VCI/commit/4044c2175b4cbee16f44c8bb5499bba249ca4993))
-* clearinterval ([214e3c6](https://github.com/Sphereon-Opensource/OID4VCI/commit/214e3c6d7ced9b27c50186db8ed876330230a6a5))
-* relax auth_endpoint handling. Doesn't have to be available when doing pre-auth flow. Client handles errors anyway in case of auth/par flow ([ce39958](https://github.com/Sphereon-Opensource/OID4VCI/commit/ce39958f21f82243f26111fd14bd2443517eef9c))
-* relax auth_endpoint handling. Doesn't have to be available when doing pre-auth flow. Client handles errors anyway in case of auth/par flow ([cb5f9c1](https://github.com/Sphereon-Opensource/OID4VCI/commit/cb5f9c1c12285508c6d403814d032e8883a59e7d))
-
-
-
-
+- Better match credential offer types and formats onto issuer metadata ([4044c21](https://github.com/Sphereon-Opensource/OID4VCI/commit/4044c2175b4cbee16f44c8bb5499bba249ca4993))
+- clearinterval ([214e3c6](https://github.com/Sphereon-Opensource/OID4VCI/commit/214e3c6d7ced9b27c50186db8ed876330230a6a5))
+- relax auth_endpoint handling. Doesn't have to be available when doing pre-auth flow. Client handles errors anyway in case of auth/par flow ([ce39958](https://github.com/Sphereon-Opensource/OID4VCI/commit/ce39958f21f82243f26111fd14bd2443517eef9c))
+- relax auth_endpoint handling. Doesn't have to be available when doing pre-auth flow. Client handles errors anyway in case of auth/par flow ([cb5f9c1](https://github.com/Sphereon-Opensource/OID4VCI/commit/cb5f9c1c12285508c6d403814d032e8883a59e7d))
 
 # [0.7.0](https://github.com/Sphereon-Opensource/OID4VCI/compare/v0.6.0...v0.7.0) (2023-08-19)
 
diff --git a/packages/client/lib/OpenID4VCIClient.ts b/packages/client/lib/OpenID4VCIClient.ts
@@ -8,6 +8,7 @@ import {
   CredentialResponse,
   CredentialSupported,
   EndpointMetadataResult,
+  JsonURIMode,
   OID4VCICredentialFormat,
   OpenId4VCIVersion,
   ProofOfPossessionCallbacks,
@@ -134,6 +135,8 @@ export class OpenID4VCIClient {
     return convertJsonToURI(queryObj, {
       baseUrl: this._endpointMetadata.authorization_endpoint,
       uriTypeProperties: ['redirect_uri', 'scope', 'authorization_details', 'issuer_state'],
+      mode: JsonURIMode.X_FORM_WWW_URLENCODED,
+      // We do not add the version here, as this always needs to be form encoded
     });
   }
 
@@ -192,6 +195,7 @@ export class OpenID4VCIClient {
       {
         baseUrl: this._endpointMetadata.credentialIssuerMetadata.authorization_endpoint,
         uriTypeProperties: ['request_uri'],
+        mode: JsonURIMode.X_FORM_WWW_URLENCODED,
       },
     );
   }
diff --git a/packages/client/lib/__tests__/OpenID4VCIClient.spec.ts b/packages/client/lib/__tests__/OpenID4VCIClient.spec.ts
@@ -107,7 +107,7 @@ describe('OpenID4VCIClient should', () => {
         redirectUri: 'http://localhost:8881/cb',
       }),
     ).toEqual(
-      'https://server.example.com/v1/auth/authorize?response_type=code&client_id=test-client&code_challenge_method=S256&code_challenge=mE2kPHmIprOqtkaYmESWj35yz-PB5vzdiSu0tAZ8sqs&authorization_details=%5B%7B%22type%22%3A%22openid_credential%22%2C%22format%22%3A%22ldp_vc%22%2C%22credential_definition%22%3A%7B%22%40context%22%3A%5B%22https%3A%2F%2Fwww%2Ew3%2Eorg%2F2018%2Fcredentials%2Fv1%22%2C%22https%3A%2F%2Fwww%2Ew3%2Eorg%2F2018%2Fcredentials%2Fexamples%2Fv1%22%5D%2C%22types%22%3A%5B%22VerifiableCredential%22%2C%22UniversityDegreeCredential%22%5D%7D%2C%22locations%22%3A%22https%3A%2F%2Fserver%2Eexample%2Ecom%22%7D%2C%7B%22type%22%3A%22openid_credential%22%2C%22format%22%3A%22mso_mdoc%22%2C%22doctype%22%3A%22org%2Eiso%2E18013%2E5%2E1%2EmDL%22%2C%22locations%22%3A%22https%3A%2F%2Fserver%2Eexample%2Ecom%22%7D%5D&redirect_uri=http%3A%2F%2Flocalhost%3A8881%2Fcb&scope=openid',
+      'https://server.example.com/v1/auth/authorize?response_type=code&code_challenge_method=S256&code_challenge=mE2kPHmIprOqtkaYmESWj35yz-PB5vzdiSu0tAZ8sqs&authorization_details=%5B%7B%22type%22%3A%22openid_credential%22%2C%22format%22%3A%22ldp_vc%22%2C%22credential_definition%22%3A%7B%22%40context%22%3A%5B%22https%3A%2F%2Fwww%2Ew3%2Eorg%2F2018%2Fcredentials%2Fv1%22%2C%22https%3A%2F%2Fwww%2Ew3%2Eorg%2F2018%2Fcredentials%2Fexamples%2Fv1%22%5D%2C%22types%22%3A%5B%22VerifiableCredential%22%2C%22UniversityDegreeCredential%22%5D%7D%2C%22locations%22%3A%22https%3A%2F%2Fserver%2Eexample%2Ecom%22%7D%2C%7B%22type%22%3A%22openid_credential%22%2C%22format%22%3A%22mso_mdoc%22%2C%22doctype%22%3A%22org%2Eiso%2E18013%2E5%2E1%2EmDL%22%2C%22locations%22%3A%22https%3A%2F%2Fserver%2Eexample%2Ecom%22%7D%5D&redirect_uri=http%3A%2F%2Flocalhost%3A8881%2Fcb&scope=openid&client_id=test-client',
     );
   });
   it('create an authorization request url with authorization_details object property', async () => {
@@ -130,7 +130,7 @@ describe('OpenID4VCIClient should', () => {
         redirectUri: 'http://localhost:8881/cb',
       }),
     ).toEqual(
-      'https://server.example.com/v1/auth/authorize?response_type=code&client_id=test-client&code_challenge_method=S256&code_challenge=mE2kPHmIprOqtkaYmESWj35yz-PB5vzdiSu0tAZ8sqs&authorization_details=%7B%22type%22%3A%22openid_credential%22%2C%22format%22%3A%22ldp_vc%22%2C%22credential_definition%22%3A%7B%22%40context%22%3A%5B%22https%3A%2F%2Fwww%2Ew3%2Eorg%2F2018%2Fcredentials%2Fv1%22%2C%22https%3A%2F%2Fwww%2Ew3%2Eorg%2F2018%2Fcredentials%2Fexamples%2Fv1%22%5D%2C%22types%22%3A%5B%22VerifiableCredential%22%2C%22UniversityDegreeCredential%22%5D%7D%2C%22locations%22%3A%22https%3A%2F%2Fserver%2Eexample%2Ecom%22%7D&redirect_uri=http%3A%2F%2Flocalhost%3A8881%2Fcb&scope=openid',
+      'https://server.example.com/v1/auth/authorize?response_type=code&code_challenge_method=S256&code_challenge=mE2kPHmIprOqtkaYmESWj35yz-PB5vzdiSu0tAZ8sqs&authorization_details=%7B%22type%22%3A%22openid_credential%22%2C%22format%22%3A%22ldp_vc%22%2C%22credential_definition%22%3A%7B%22%40context%22%3A%5B%22https%3A%2F%2Fwww%2Ew3%2Eorg%2F2018%2Fcredentials%2Fv1%22%2C%22https%3A%2F%2Fwww%2Ew3%2Eorg%2F2018%2Fcredentials%2Fexamples%2Fv1%22%5D%2C%22types%22%3A%5B%22VerifiableCredential%22%2C%22UniversityDegreeCredential%22%5D%7D%2C%22locations%22%3A%22https%3A%2F%2Fserver%2Eexample%2Ecom%22%7D&redirect_uri=http%3A%2F%2Flocalhost%3A8881%2Fcb&scope=openid&client_id=test-client',
     );
   });
   it('create an authorization request url with authorization_details and scope', async () => {
@@ -155,7 +155,7 @@ describe('OpenID4VCIClient should', () => {
         redirectUri: 'http://localhost:8881/cb',
       }),
     ).toEqual(
-      'https://server.example.com/v1/auth/authorize?response_type=code&client_id=test-client&code_challenge_method=S256&code_challenge=mE2kPHmIprOqtkaYmESWj35yz-PB5vzdiSu0tAZ8sqs&authorization_details=%7B%22type%22%3A%22openid_credential%22%2C%22format%22%3A%22ldp_vc%22%2C%22locations%22%3A%5B%22https%3A%2F%2Ftest%2Ecom%22%2C%22https%3A%2F%2Fserver%2Eexample%2Ecom%22%5D%2C%22credential_definition%22%3A%7B%22%40context%22%3A%5B%22https%3A%2F%2Fwww%2Ew3%2Eorg%2F2018%2Fcredentials%2Fv1%22%2C%22https%3A%2F%2Fwww%2Ew3%2Eorg%2F2018%2Fcredentials%2Fexamples%2Fv1%22%5D%2C%22types%22%3A%5B%22VerifiableCredential%22%2C%22UniversityDegreeCredential%22%5D%7D%7D&redirect_uri=http%3A%2F%2Flocalhost%3A8881%2Fcb&scope=openid',
+      'https://server.example.com/v1/auth/authorize?response_type=code&code_challenge_method=S256&code_challenge=mE2kPHmIprOqtkaYmESWj35yz-PB5vzdiSu0tAZ8sqs&authorization_details=%7B%22type%22%3A%22openid_credential%22%2C%22format%22%3A%22ldp_vc%22%2C%22locations%22%3A%5B%22https%3A%2F%2Ftest%2Ecom%22%2C%22https%3A%2F%2Fserver%2Eexample%2Ecom%22%5D%2C%22credential_definition%22%3A%7B%22%40context%22%3A%5B%22https%3A%2F%2Fwww%2Ew3%2Eorg%2F2018%2Fcredentials%2Fv1%22%2C%22https%3A%2F%2Fwww%2Ew3%2Eorg%2F2018%2Fcredentials%2Fexamples%2Fv1%22%5D%2C%22types%22%3A%5B%22VerifiableCredential%22%2C%22UniversityDegreeCredential%22%5D%7D%7D&redirect_uri=http%3A%2F%2Flocalhost%3A8881%2Fcb&scope=openid&client_id=test-client',
     );
   });
 });
diff --git a/packages/common/CHANGELOG.md b/packages/common/CHANGELOG.md
@@ -7,34 +7,20 @@ See [Conventional Commits](https://conventionalcommits.org) for commit guideline
 
 **Note:** Version bump only for package @sphereon/oid4vci-common
 
-
-
-
-
 ## [0.7.2](https://github.com/Sphereon-Opensource/OID4VCI/compare/v0.7.1...v0.7.2) (2023-09-28)
 
-
 ### Bug Fixes
 
-* id lookup against server metadata not working ([592ec4b](https://github.com/Sphereon-Opensource/OID4VCI/commit/592ec4b837898eb3022d19479d79b6065e7a0d9e))
-
-
-
-
+- id lookup against server metadata not working ([592ec4b](https://github.com/Sphereon-Opensource/OID4VCI/commit/592ec4b837898eb3022d19479d79b6065e7a0d9e))
 
 ## [0.7.1](https://github.com/Sphereon-Opensource/OID4VCI/compare/v0.7.0...v0.7.1) (2023-09-28)
 
-
 ### Bug Fixes
 
-* Better match credential offer types and formats onto issuer metadata ([4044c21](https://github.com/Sphereon-Opensource/OID4VCI/commit/4044c2175b4cbee16f44c8bb5499bba249ca4993))
-* Fix credential offer matching against metadata ([3c23bab](https://github.com/Sphereon-Opensource/OID4VCI/commit/3c23bab83569e04a4b5846fed83ce00d68e8ddce))
-* Fix credential offer matching against metadata ([b79027f](https://github.com/Sphereon-Opensource/OID4VCI/commit/b79027fe601ecccb1373ba399419e14f5ec2d7ff))
-* relax auth_endpoint handling. Doesn't have to be available when doing pre-auth flow. Client handles errors anyway in case of auth/par flow ([cb5f9c1](https://github.com/Sphereon-Opensource/OID4VCI/commit/cb5f9c1c12285508c6d403814d032e8883a59e7d))
-
-
-
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+- Better match credential offer types and formats onto issuer metadata ([4044c21](https://github.com/Sphereon-Opensource/OID4VCI/commit/4044c2175b4cbee16f44c8bb5499bba249ca4993))
+- Fix credential offer matching against metadata ([3c23bab](https://github.com/Sphereon-Opensource/OID4VCI/commit/3c23bab83569e04a4b5846fed83ce00d68e8ddce))
+- Fix credential offer matching against metadata ([b79027f](https://github.com/Sphereon-Opensource/OID4VCI/commit/b79027fe601ecccb1373ba399419e14f5ec2d7ff))
+- relax auth_endpoint handling. Doesn't have to be available when doing pre-auth flow. Client handles errors anyway in case of auth/par flow ([cb5f9c1](https://github.com/Sphereon-Opensource/OID4VCI/commit/cb5f9c1c12285508c6d403814d032e8883a59e7d))
 
 # [0.7.0](https://github.com/Sphereon-Opensource/OID4VCI/compare/v0.6.0...v0.7.0) (2023-08-19)
 
diff --git a/packages/common/lib/functions/Encoding.ts b/packages/common/lib/functions/Encoding.ts
@@ -1,4 +1,4 @@
-import { BAD_PARAMS, DecodeURIAsJsonOpts, EncodeJsonAsURIOpts, OpenId4VCIVersion, SearchValue } from '../types';
+import { BAD_PARAMS, DecodeURIAsJsonOpts, EncodeJsonAsURIOpts, JsonURIMode, OpenId4VCIVersion, SearchValue } from '../types';
 
 /**
  * @function encodeJsonAsURI encodes a Json object into a URI
@@ -30,10 +30,11 @@ export function convertJsonToURI(
   }
 
   let components: string;
-  if (opts?.version && opts.version > OpenId4VCIVersion.VER_1_0_08) {
+  if ((opts?.version && opts.version > OpenId4VCIVersion.VER_1_0_08 && !opts.mode) || opts?.mode === JsonURIMode.JSON_STRINGIFY) {
     // v11 changed from encoding every param to a encoded json object with a credential_offer param key
     components = encodeAndStripWhitespace(JSON.stringify(json));
   } else {
+    // version 8 or lower, or mode is x-form-www-urlencoded
     for (const [key, value] of Object.entries(json)) {
       if (!value) {
         continue;
diff --git a/packages/common/lib/types/CredentialIssuance.types.ts b/packages/common/lib/types/CredentialIssuance.types.ts
@@ -56,11 +56,17 @@ export type SearchValue = {
   [Symbol.replace](string: string, replacer: (substring: string, ...args: any[]) => string): string;
 };
 
+export enum JsonURIMode {
+  JSON_STRINGIFY,
+  X_FORM_WWW_URLENCODED,
+}
+
 export type EncodeJsonAsURIOpts = {
   uriTypeProperties?: string[];
   arrayTypeProperties?: string[];
   baseUrl?: string;
   param?: string;
+  mode?: JsonURIMode;
   version?: OpenId4VCIVersion;
 };
 
diff --git a/packages/common/lib/types/Generic.types.ts b/packages/common/lib/types/Generic.types.ts
@@ -53,7 +53,7 @@ export interface CredentialIssuerMetadataOpts {
   authorization_server?: string; // OPTIONAL. Identifier of the OAuth 2.0 Authorization Server (as defined in [RFC8414]) the Credential Issuer relies on for authorization. If this element is omitted, the entity providing the Credential Issuer is also acting as the AS, i.e. the Credential Issuer's identifier is used as the OAuth 2.0 Issuer value to obtain the Authorization Server metadata as per [RFC8414].
   token_endpoint?: string;
   display?: MetadataDisplay[]; //  An array of objects, where each object contains display properties of a Credential Issuer for a certain language. Below is a non-exhaustive list of valid parameters that MAY be included:
-  credential_supplier_config?: CredentialSupplierConfig
+  credential_supplier_config?: CredentialSupplierConfig;
 }
 
 // For now we extend the opts above. Only difference is that the credential endpoint is optional in the Opts, as it can come from other sources. The value is however required in the eventual Issuer Metadata
diff --git a/packages/issuer-rest/CHANGELOG.md b/packages/issuer-rest/CHANGELOG.md
@@ -5,33 +5,19 @@ See [Conventional Commits](https://conventionalcommits.org) for commit guideline
 
 ## [0.7.3](https://github.com/Sphereon-Opensource/OID4VCI/compare/v0.7.2...v0.7.3) (2023-09-30)
 
-
 ### Bug Fixes
 
-* allow token endpoint to be defined in metadata without triggering logic for external AS ([d99304c](https://github.com/Sphereon-Opensource/OID4VCI/commit/d99304cd02b92974785f516e8bd82900cc3e0925))
-
-
-
-
+- allow token endpoint to be defined in metadata without triggering logic for external AS ([d99304c](https://github.com/Sphereon-Opensource/OID4VCI/commit/d99304cd02b92974785f516e8bd82900cc3e0925))
 
 ## [0.7.2](https://github.com/Sphereon-Opensource/OID4VCI/compare/v0.7.1...v0.7.2) (2023-09-28)
 
 **Note:** Version bump only for package @sphereon/oid4vci-issuer-server
 
-
-
-
-
 ## [0.7.1](https://github.com/Sphereon-Opensource/OID4VCI/compare/v0.7.0...v0.7.1) (2023-09-28)
 
-
 ### Bug Fixes
 
-* Better match credential offer types and formats onto issuer metadata ([4044c21](https://github.com/Sphereon-Opensource/OID4VCI/commit/4044c2175b4cbee16f44c8bb5499bba249ca4993))
-
-
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+- Better match credential offer types and formats onto issuer metadata ([4044c21](https://github.com/Sphereon-Opensource/OID4VCI/commit/4044c2175b4cbee16f44c8bb5499bba249ca4993))
 
 # [0.7.0](https://github.com/Sphereon-Opensource/OID4VCI/compare/v0.6.0...v0.7.0) (2023-08-19)
 
diff --git a/packages/issuer/CHANGELOG.md b/packages/issuer/CHANGELOG.md
@@ -7,29 +7,16 @@ See [Conventional Commits](https://conventionalcommits.org) for commit guideline
 
 **Note:** Version bump only for package @sphereon/oid4vci-issuer
 
-
-
-
-
 ## [0.7.2](https://github.com/Sphereon-Opensource/OID4VCI/compare/v0.7.1...v0.7.2) (2023-09-28)
 
 **Note:** Version bump only for package @sphereon/oid4vci-issuer
 
-
-
-
-
 ## [0.7.1](https://github.com/Sphereon-Opensource/OID4VCI/compare/v0.7.0...v0.7.1) (2023-09-28)
 
-
 ### Bug Fixes
 
-* Better match credential offer types and formats onto issuer metadata ([4044c21](https://github.com/Sphereon-Opensource/OID4VCI/commit/4044c2175b4cbee16f44c8bb5499bba249ca4993))
-* clearinterval ([214e3c6](https://github.com/Sphereon-Opensource/OID4VCI/commit/214e3c6d7ced9b27c50186db8ed876330230a6a5))
-
-
-
-
+- Better match credential offer types and formats onto issuer metadata ([4044c21](https://github.com/Sphereon-Opensource/OID4VCI/commit/4044c2175b4cbee16f44c8bb5499bba249ca4993))
+- clearinterval ([214e3c6](https://github.com/Sphereon-Opensource/OID4VCI/commit/214e3c6d7ced9b27c50186db8ed876330230a6a5))
 
 # [0.7.0](https://github.com/Sphereon-Opensource/OID4VCI/compare/v0.6.0...v0.7.0) (2023-08-19)
 
diff --git a/packages/issuer/lib/VcIssuer.ts b/packages/issuer/lib/VcIssuer.ts
@@ -276,11 +276,11 @@ export class VcIssuer<DIDDoc extends object> {
         }
         const credentialDataSupplierInput = opts.credentialDataSupplierInput ?? session.credentialDataSupplierInput
 
-          const result = await credentialDataSupplier({
+        const result = await credentialDataSupplier({
           ...cNonceState,
-            credentialRequest: opts.credentialRequest,
-            credentialSupplierConfig: this._issuerMetadata.credential_supplier_config,
-            credentialOffer /*todo: clientId: */,
+          credentialRequest: opts.credentialRequest,
+          credentialSupplierConfig: this._issuerMetadata.credential_supplier_config,
+          credentialOffer /*todo: clientId: */,
           ...(credentialDataSupplierInput && { credentialDataSupplierInput }),
         } as CredentialDataSupplierArgs)
         credential = result.credential
diff --git a/packages/issuer/lib/types/index.ts b/packages/issuer/lib/types/index.ts
@@ -1,10 +1,11 @@
 import {
   AssertedUniformCredentialOffer,
   CNonceState,
-  CredentialDataSupplierInput, CredentialSupplierConfig,
+  CredentialDataSupplierInput,
+  CredentialSupplierConfig,
   JwtVerifyResult,
   OID4VCICredentialFormat,
-  UniformCredentialRequest
+  UniformCredentialRequest,
 } from '@sphereon/oid4vci-common'
 import { ICredential, W3CVerifiableCredential } from '@sphereon/ssi-types'
 

Original file line number	Diff line number	Diff line change
`@@ -53,7 +53,7 @@ export interface CredentialIssuerMetadataOpts {`
`53`	`53`	`authorization_server?: string; // OPTIONAL. Identifier of the OAuth 2.0 Authorization Server (as defined in [RFC8414]) the Credential Issuer relies on for authorization. If this element is omitted, the entity providing the Credential Issuer is also acting as the AS, i.e. the Credential Issuer's identifier is used as the OAuth 2.0 Issuer value to obtain the Authorization Server metadata as per [RFC8414].`
`54`	`54`	`token_endpoint?: string;`
`55`	`55`	`display?: MetadataDisplay[]; // An array of objects, where each object contains display properties of a Credential Issuer for a certain language. Below is a non-exhaustive list of valid parameters that MAY be included:`
`56`		`- credential_supplier_config?: CredentialSupplierConfig`
	`56`	`+ credential_supplier_config?: CredentialSupplierConfig;`
`57`	`57`	`}`
`58`	`58`
`59`	`59`	`// For now we extend the opts above. Only difference is that the credential endpoint is optional in the Opts, as it can come from other sources. The value is however required in the eventual Issuer Metadata`