feat(package): modernize package metadata, typings, and test setup for ESM builds

test/test.both.ts

@@ -1,4 +1,4 @@
-import { expect, tap } from '@push.rocks/tapbundle';
+import { expect, tap } from '@git.zone/tstest/tapbundle';
 import * as smartmarkdown from '../ts/index.js';
 
 let smartMarkdownInstance: smartmarkdown.SmartMarkdown;
@@ -23,15 +23,15 @@ hello: yes
 # hello there
 `;
   const mdParsedResult = await smartMarkdownInstance.getMdParsedResultFromMarkdown(markdownString);
-  
+
   expect(mdParsedResult.frontmatterData.hello).toEqual('yes');
-  
 });
 
 tap.test('should convert a html string to markdown', async () => {
   const htmlString = '<h1 id="hi">Hi!</h1>\n<h2>This is it!</h2>';
   const markdownString = smartMarkdownInstance.htmlToMarkdown(htmlString);
-  console.log(markdownString);
+  expect(markdownString).toContain('# Hi!');
+  expect(markdownString).toContain('## This is it!');
 });
 
-tap.start();
+export default tap.start();