Replace old docs with new docs repo (#24201)

docs/guides/binary/arraybuffer-to-string.mdx

@@ -0,0 +1,17 @@
+---
+title: Convert an ArrayBuffer to a string
+sidebarTitle: "ArrayBuffer to string"
+mode: center
+---
+
+Bun implements the Web-standard [`TextDecoder`](https://developer.mozilla.org/en-US/docs/Web/API/TextDecoder) class for converting between binary data types and strings.
+
+```ts
+const buf = new ArrayBuffer(64);
+const decoder = new TextDecoder();
+const str = decoder.decode(buf);
+```
+
+---
+
+See [Docs > API > Binary Data](https://bun.com/docs/api/binary-data#conversion) for complete documentation on manipulating binary data with Bun.