found/fixed some errors while testing agains WPT (#109)

* found/fixed some errors while testing agains WPT
* only run test.js with ava

test/http-loader.js

@@ -0,0 +1,51 @@
+// https-loader.mjs
+import { get } from 'https';
+
+export function resolve(specifier, context, defaultResolve) {
+  const { parentURL = null } = context;
+
+  // Normally Node.js would error on specifiers starting with 'https://', so
+  // this hook intercepts them and converts them into absolute URLs to be
+  // passed along to the later hooks below.
+  if (specifier.startsWith('https://')) {
+    return {
+      url: specifier
+    };
+  } else if (parentURL && parentURL.startsWith('https://')) {
+    return {
+      url: new URL(specifier, parentURL).href
+    };
+  }
+
+  // Let Node.js handle all other specifiers.
+  return defaultResolve(specifier, context, defaultResolve);
+}
+
+export function getFormat(url, context, defaultGetFormat) {
+  // This loader assumes all network-provided JavaScript is ES module code.
+  if (url.startsWith('https://')) {
+    return {
+      format: 'module'
+    };
+  }
+
+  // Let Node.js handle all other URLs.
+  return defaultGetFormat(url, context, defaultGetFormat);
+}
+
+export function getSource(url, context, defaultGetSource) {
+  // For JavaScript to be loaded over the network, we need to fetch and
+  // return it.
+  if (url.startsWith('https://')) {
+    return new Promise((resolve, reject) => {
+      let data = ''
+      get(url, async res => {
+        for await (const chunk of res) data += chunk;
+        resolve({ source: data });
+      }).on('error', (err) => reject(err));
+    });
+  }
+
+  // Let Node.js handle all other URLs.
+  return defaultGetSource(url, context, defaultGetSource);
+}