feat: added .npmignore for test

Author: JS-AK

.npmignore

@@ -1,3 +1,5 @@
 .npmignore
 
 src/test/
+
+test/

test/index.ts

@@ -0,0 +1,11 @@
+import assert from "node:assert";
+import test from "node:test";
+
+import { isTest } from "../src/lib/index.js";
+
+
+test("test", () => {
+  const check = isTest('TEST')
+
+  assert.equal(check, true);
+});