fix: issue where cli side effect prevents import as cjs module

src/index.ts

@@ -1,5 +1,5 @@
-export { Downloader, type DownloaderOptions } from './Downloader';
-export { FormatConverter } from './FormatConverter';
+export * from './Downloader';
+export * from './FormatConverter';
 export * from './SongTagsSearch';
-export * from './main';
+export { main } from './main';
 export { YtdlMp3Error } from './utils';

src/main.ts

@@ -4,19 +4,19 @@ import { description, name, version } from '../package.json';
 import { Downloader } from './Downloader';
 import { YtdlMp3Error } from './utils';
 
-const program = new Command();
-program.name(name);
-program.description(description);
-program.version(version);
-program.allowExcessArguments(false);
-program.argument('<url>', 'url of video to download');
-program.option('-o --output-dir <path>', 'path to output directory', Downloader.defaultDownloadsDir);
-program.option('-n --no-get-tags', 'skip extracting/applying id3 tags');
-program.option('-v --verify-tags', 'verify id3 tags fetched from itunes');
-program.option('--verbose', 'enable verbose mode');
-program.parse();
-
 export async function main() {
+  const program = new Command();
+  program.name(name);
+  program.description(description);
+  program.version(version);
+  program.allowExcessArguments(false);
+  program.argument('<url>', 'url of video to download');
+  program.option('-o --output-dir <path>', 'path to output directory', Downloader.defaultDownloadsDir);
+  program.option('-n --no-get-tags', 'skip extracting/applying id3 tags');
+  program.option('-v --verify-tags', 'verify id3 tags fetched from itunes');
+  program.option('--verbose', 'enable verbose mode');
+  program.parse();
+
   const options = program.opts();
   try {
     const downloader = new Downloader(options);