Fix dep import url of cjs module (close #592)

Author: ije

server/build.go

@@ -773,7 +773,11 @@ rebuild:
 									}
 									// if the dep is an es6 module
 									if !marked && depNpm.Module != "" {
-										cjsImportNames.Add("*?")
+										if depESM.HasExportDefault && len(depESM.NamedExports) == 1 {
+											cjsImportNames.Add("default")
+										} else {
+											cjsImportNames.Add("*?")
+										}
 										marked = true
 									}
 									if !marked && includes(depESM.NamedExports, "__esModule") && depESM.HasExportDefault {

test/issue-592/issue-592.test.ts

@@ -0,0 +1,7 @@
+import { assertEquals } from "https://deno.land/std@0.178.0/testing/asserts.ts";
+
+import { createConnection } from "http://localhost:8080/mysql2@3.2.0";
+
+Deno.test("issue #592", async () => {
+  assertEquals(typeof createConnection, "function");
+});