don't preload dynamic imports

resolveImports.mjs

@@ -25,8 +25,9 @@ export default async function resolveImports(module, root = true) {
   let modules = [];
 
   await Promise.all(
-    imports.map(async ({ n: specifier }) => {
-      if (specifier) {
+    imports.map(async ({ n: specifier, d }) => {
+      const dynamic = d > -1;
+      if (specifier && !dynamic) {
         const resolvedModule = path.resolve(path.dirname(module), specifier);
         const preloadable = await exists(resolvedModule);
 
@@ -37,7 +38,7 @@ export default async function resolveImports(module, root = true) {
 
           const graph = await resolveImports(resolvedModule, false);
 
-          if (graph) {
+          if (graph?.length > 0) {
             graph.forEach((module) => modules.push(module));
           }
         }

resolveImportsCached.mjs

@@ -10,7 +10,7 @@ export default async function resolveImportsCached(module) {
   } else {
     const graph = await resolveImports(module);
 
-    if (graph) {
+    if (graph?.length > 0) {
       cache.set(module, graph);
       return graph;
     }

resolveLinkRelations.test.mjs

@@ -13,8 +13,10 @@ test("resolveLinkRelations", async (t) => {
     assert.ok(resolvedModules.includes("/d.mjs"));
     assert.ok(resolvedModules.includes("/lib/aa.mjs"));
     assert.ok(resolvedModules.includes("/lib/bb.mjs"));
+    // Should not resolve dynamic imports
+    assert.ok(!resolvedModules.includes("/lib/cc.mjs"));
 
-    assert.equal(resolvedModules.length, 5);
+    assert.equal(resolvedModules.length, 4);
 
     const resolvedModulesCached = await resolveLinkRelations({
       appPath: "test-fixtures",
@@ -25,8 +27,10 @@ test("resolveLinkRelations", async (t) => {
     assert.ok(resolvedModulesCached.includes("/d.mjs"));
     assert.ok(resolvedModulesCached.includes("/lib/aa.mjs"));
     assert.ok(resolvedModulesCached.includes("/lib/bb.mjs"));
+    // Should not resolve dynamic imports
+    assert.ok(!resolvedModulesCached.includes("/lib/cc.mjs"));
 
-    assert.equal(resolvedModulesCached.length, 5);
+    assert.equal(resolvedModulesCached.length, 4);
   });
 
   await t.test("can't reach outside of appPath", async () => {

test-fixtures/d.mjs

@@ -1,3 +1 @@
-const message = "Hello World";
-
-export default message;
+import "./missing-import.mjs";

test-fixtures/lib/cc.mjs

@@ -1 +0,0 @@
-import "./missing-import.mjs";