added esm tests

package.json

@@ -30,7 +30,7 @@
   "scripts": {
     "clean": "shx rm -f esm/index.mjs lib/nuid.d.ts lib/nuid.js lib/nuid.js.map",
     "build": "npm run clean && deno bundle src/nuid.ts esm/index.mjs && tsc",
-    "test": "npm run build && node --test",
+    "test": "npm run build && node --test test/basics.js && deno test",
     "prepack": "npm run build"
   },
   "engines": {

test/basics_test.ts

@@ -0,0 +1,69 @@
+/*
+ * Copyright 2016-2024 The NATS Authors
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { next, nuid, reset } from "../esm/index.mjs";
+import {
+  assert,
+  assertEquals,
+  assertExists,
+  assertNotEquals,
+} from "jsr:@std/assert";
+
+Deno.test("global nuid should not be null", () => {
+  assertExists(nuid);
+  nuid.next();
+  assertExists(nuid.buf);
+  assert(nuid.buf.length > 0);
+  assertExists(nuid.seq);
+  assert(nuid.seq > 0);
+  assertExists(nuid.inc);
+});
+
+Deno.test("duplicate nuids", () => {
+  const m: Record<string, boolean> = {};
+  // make this really big when testing, for normal runs small
+  for (let i = 0; i < 10000; i++) {
+    const k = nuid.next();
+    assertEquals(m[k], undefined);
+    m[k] = true;
+  }
+});
+
+Deno.test("roll seq", () => {
+  const a = nuid.buf.slice(12);
+  nuid.next();
+  const b = nuid.buf.slice(12);
+  assertNotEquals(a, b);
+});
+
+Deno.test("roll pre", () => {
+  nuid.seq = 3656158440062976 + 1;
+  const a = nuid.buf.slice(0, 12);
+  nuid.next();
+  const b = nuid.buf.slice(0, 12);
+  assertNotEquals(a, b);
+});
+
+Deno.test("reset should reset", () => {
+  const a = nuid.buf.slice(0, 12);
+  reset();
+  const b = nuid.buf.slice(0, 12);
+  assertNotEquals(a, b);
+});
+
+Deno.test("reset and next are fn", () => {
+  assertEquals(typeof reset, "function");
+  assertEquals(typeof next, "function");
+});