Replace old docs with new docs repo (#24201)

docs/guides/read-file/stream.mdx

@@ -0,0 +1,28 @@
+---
+title: Read a file as a ReadableStream
+sidebarTitle: Read as stream
+mode: center
+---
+
+The `Bun.file()` function accepts a path and returns a `BunFile` instance. The `BunFile` class extends `Blob` and allows you to lazily read the file in a variety of formats. Use `.stream()` to consume the file incrementally as a `ReadableStream`.
+
+```ts
+const path = "/path/to/package.json";
+const file = Bun.file(path);
+
+const stream = file.stream();
+```
+
+---
+
+The chunks of the stream can be consumed as an [async iterable](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols#the_async_iterator_and_async_iterable_protocols) using `for await`.
+
+```ts
+for await (const chunk of stream) {
+  chunk; // => Uint8Array
+}
+```
+
+---
+
+Refer to the [Streams](https://bun.com/docs/api/streams) documentation for more information on working with streams in Bun.