test: esm can be imported

tests/esm.mjs

@@ -0,0 +1,12 @@
+"use strict";
+
+import AJQueryExplicit from "../ajquery.mjs";
+
+if (!AJQueryExplicit.$) {
+  throw new Error("did not export $ correctly");
+}
+if (!AJQueryExplicit.$$) {
+  throw new Error("did not export $$ correctly");
+}
+
+console.log(`\x1b[34mPASS\x1b[33m`);