feat(js): fetchOidcConfig

packages/js/package.json

@@ -19,6 +19,7 @@
   },
   "dependencies": {
     "@silverhand/essentials": "^1.1.5",
+    "camelcase-keys": "^7.0.1",
     "jose": "^4.3.8",
     "js-base64": "^3.7.2",
     "lodash.get": "^4.4.2",

packages/js/src/core/oidc-config.test.ts

@@ -0,0 +1,26 @@
+import { fetchOidcConfig } from './oidc-config';
+
+describe('fetchOidcConfig', () => {
+  test('should return OidcConfigResponse with camel case keys', async () => {
+    const requester = jest.fn().mockResolvedValue({
+      authorization_endpoint: 'foo',
+      token_endpoint: 'foo',
+      userinfo_endpoint: 'foo',
+      end_session_endpoint: 'foo',
+      revocation_endpoint: 'foo',
+      jwks_uri: 'foo',
+      issuer: 'foo',
+    });
+    await expect(
+      fetchOidcConfig('https://example.com/oidc/.well-known/openid-configuration', requester)
+    ).resolves.toEqual({
+      authorizationEndpoint: 'foo',
+      tokenEndpoint: 'foo',
+      userinfoEndpoint: 'foo',
+      endSessionEndpoint: 'foo',
+      revocationEndpoint: 'foo',
+      jwksUri: 'foo',
+      issuer: 'foo',
+    });
+  });
+});

packages/js/src/core/oidc-config.ts

@@ -0,0 +1,22 @@
+import { KeysToCamelCase } from '@silverhand/essentials';
+import camelcaseKeys from 'camelcase-keys';
+
+import { createRequester, Requester } from '../utils/requester';
+
+type OidcConfigSnakeCaseResponse = {
+  authorization_endpoint: string;
+  token_endpoint: string;
+  userinfo_endpoint: string;
+  end_session_endpoint: string;
+  revocation_endpoint: string;
+  jwks_uri: string;
+  issuer: string;
+};
+
+export type OidcConfigResponse = KeysToCamelCase<OidcConfigSnakeCaseResponse>;
+
+export const fetchOidcConfig = async (
+  endpoint: string,
+  requester: Requester = createRequester()
+): Promise<OidcConfigResponse> =>
+  camelcaseKeys(await requester<OidcConfigSnakeCaseResponse>(endpoint));