fix: Migrate to WHATWG URL API from node's core url (#465)

src/wrappers/request.js

@@ -1,6 +1,6 @@
 const http = require('http');
 const https = require('https');
-const urlUtil = require('url');
+const ArgumentError = require('../errors/ArgumentError');
 
 module.exports.default =  (options) => {
   if (options.fetcher) {
@@ -8,12 +8,14 @@ module.exports.default =  (options) => {
   }
 
   return new Promise((resolve, reject) => {
-    const {
-      hostname,
-      path,
-      port,
-      protocol
-    } = urlUtil.parse(options.uri);
+    let url;
+    try {
+      url = new URL(options.uri);
+    } catch (err) {
+      throw new ArgumentError('Invalid JWKS URI: The provided URI is not a valid URL.');
+    }
+    const { hostname, port, protocol, pathname, search } = url;
+    const path = pathname + search;
 
     const requestOptions = {
       hostname,

tests/request.tests.js

@@ -48,7 +48,7 @@ describe('Request wrapper tests', () => {
       .reply(500, function () { this.req.response.statusMessage = errorMsg; });
       
     request({ uri })
-      .then(() => done('Shoul dhave thrown error'))
+      .then(() => done('Should have thrown error'))
       .catch((err) => { 
         expect(err.errorMsg).to.eql(errorMsg); 
         done();
@@ -131,4 +131,14 @@ describe('Request wrapper tests', () => {
         .catch(done);
     });
   });
+
+  it('should reject with the ArgumentError message for malformed URI', (done) => {
+    const badUrl = 'not-a-valid-url';
+    request({ uri: badUrl })
+      .then(() => done('Should have thrown error'))
+      .catch((err) => {
+        expect(err.message).to.equal('Invalid JWKS URI: The provided URI is not a valid URL.');
+        done();
+      });
+  });
 });