Switch http handler to use http-client instead of fetch global.

Author: dmitrizagidulin

.eslintrc.js

@@ -11,6 +11,7 @@ module.exports = {
     'prettier/prettier': 'off',
     'arrow-body-style': 'off',
     'prefer-arrow-callback': 'off',
-    '@typescript-eslint/return-await': 'off'
+    '@typescript-eslint/return-await': 'off',
+    '@typescript-eslint/restrict-template-expressions': 'off'
   }
 }

package.json

@@ -31,6 +31,7 @@
     "./package.json": "./package.json"
   },
   "dependencies": {
+    "@digitalbazaar/http-client": "^4.1.0",
     "@digitalbazaar/vc-status-list-context": "^3.0.1",
     "@digitalcredentials/crypto-ld": "^7.0.2",
     "@digitalcredentials/dcc-context": "^1.0.0",

src/declarations.d.ts

@@ -19,3 +19,4 @@ declare module 'json-canonicalize';
 declare module 'react-native-keychain';
 declare module '@digitalcredentials/open-badges-context';
 declare module '@digitalbazaar/credentials-v2-context';
+declare module '@digitalbazaar/http-client';

src/documentLoader.ts

@@ -18,6 +18,7 @@ import { CryptoLD } from '@digitalcredentials/crypto-ld';
 import * as didWeb from '@interop/did-web-resolver';
 import { parseResponseBody } from './parseResponse';
 import obCtx from '@digitalcredentials/open-badges-context';
+import { httpClient } from '@digitalbazaar/http-client';
 // import vc2Context from '@digitalbazaar/credentials-v2-context';
 
 const cryptoLd = new CryptoLD();
@@ -53,9 +54,9 @@ export const httpClientHandler = {
         'Cache-Control': 'no-cache',
         'Pragma': 'no-cache'
       };
-      result = await fetch(params.url, { headers });
-    } catch(e) {
-      throw new Error('NotFoundError');
+      result = await httpClient.get(params.url, { headers });
+    } catch(e: any) {
+      throw new Error(`NotFoundError loading "${params.url}": ${e.message}`);
     }
 
     return parseResponseBody(result);

test/documentLoader.spec.ts

@@ -15,6 +15,15 @@ describe('documentLoader', () => {
     expect(result.document).to.equal(contextObject)
   })
 
+  it('should load a status VC from web', async () => {
+    const documentLoader = securityLoader({fetchRemoteContexts: true}).build();
+
+    const url = 'https://digitalcredentials.github.io/credential-status-playground/JWZM3H8WKU';
+    const result = await documentLoader(url);
+    expect(result.document.issuer).to
+      .equal('did:key:z6MkhVTX9BF3NGYX6cc7jWpbNnR7cAjH8LUffabZP8Qu4ysC');
+  });
+
   it('supports beta OBv3 context', async () => {
     const load = securityLoader().build()
     const { document } = await load('https://purl.imsglobal.org/spec/ob/v3p0/context.json')