1 files changed, 19 insertions, 0 deletions
diff --git a/test/fixtures/es-module-loaders/js-loader.mjs b/test/fixtures/es-module-loaders/js-loader.mjs
new file mode 100644
index 0000000000..79d9774c1d
--- /dev/null
+++ b/test/fixtures/es-module-loaders/js-loader.mjs
@@ -0,0 +1,19 @@
+import _url from 'url';
+const builtins = new Set(
+  Object.keys(process.binding('natives')).filter(str =>
+    /^(?!(?:internal|node|v8)\/)/.test(str))
+)
+export function resolve (specifier, base) {
+  if (builtins.has(specifier)) {
+    return {
+      url: specifier,
+      format: 'builtin'
+    };
+  }
+  // load all dependencies as esm, regardless of file extension
+  const url = new _url.URL(specifier, base).href;
+  return {
+    url,
+    format: 'esm'
+  };
+}