fixup: fix tests

Author: MylesBorins

test/fixtures/es-module-loaders/builtin-named-exports-loader.mjs

@@ -1,10 +1,5 @@
 import module from 'module';
 
-const builtins = new Set(
-  Object.keys(process.binding('natives')).filter(str =>
-    /^(?!(?:internal|node|v8)\/)/.test(str))
-);
-
 export function dynamicInstantiate(url) {
   const builtinInstance = module._load(url.substr(5));
   const builtinExports = ['default', ...Object.keys(builtinInstance)];
@@ -19,7 +14,7 @@ export function dynamicInstantiate(url) {
 }
 
 export function resolve(specifier, base, defaultResolver) {
-  if (builtins.has(specifier)) {
+  if (module.builtinModules.includes(specifier)) {
     return {
       url: `node:${specifier}`,
       format: 'dynamic'

test/fixtures/es-module-loaders/example-loader.mjs

@@ -1,18 +1,15 @@
 import url from 'url';
 import path from 'path';
 import process from 'process';
+import { builtinModules } from 'module';
 
-const builtins = new Set(
-  Object.keys(process.binding('natives')).filter((str) =>
-    /^(?!(?:internal|node|v8)\/)/.test(str))
-);
 const JS_EXTENSIONS = new Set(['.js', '.mjs']);
 
 const baseURL = new url.URL('file://');
 baseURL.pathname = process.cwd() + '/';
 
 export function resolve(specifier, parentModuleURL = baseURL /*, defaultResolve */) {
-  if (builtins.has(specifier)) {
+  if (builtinModules.includes(specifier)) {
     return {
       url: specifier,
       format: 'builtin'

test/fixtures/es-module-loaders/js-loader.mjs

@@ -1,15 +1,11 @@
 import { URL } from 'url';
-
-const builtins = new Set(
-  Object.keys(process.binding('natives')).filter(str =>
-    /^(?!(?:internal|node|v8)\/)/.test(str))
-)
+import { builtinModules } from 'module';
 
 const baseURL = new URL('file://');
 baseURL.pathname = process.cwd() + '/';
 
 export function resolve (specifier, base = baseURL) {
-  if (builtins.has(specifier)) {
+  if (builtinModules.includes(specifier)) {
     return {
       url: specifier,
       format: 'builtin'