feat: first step

examples/playground.ts

@@ -0,0 +1,21 @@
+import fs from 'node:fs/promises';
+import {
+  ReadableStream,
+  WritableStream,
+  type TransformStream,
+} from 'node:stream/web';
+import { EbmlStreamDecoder } from 'konoebml';
+
+async function main() {
+  const fileBuffer = await fs.readFile('media/test.webm');
+  await new ReadableStream({
+    pull(controller) {
+      controller.enqueue(fileBuffer);
+      controller.close();
+    },
+  })
+    .pipeThrough(new EbmlStreamDecoder() as unknown as TransformStream)
+    .pipeTo(new WritableStream({ write: console.log }));
+}
+
+main();