Fix: make it a real BitArray

src/ffi.mjs

@@ -1,4 +1,4 @@
-import { Ok, Error, List } from "./gleam.mjs";
+import { Ok, Error, List, toBitArray } from "./gleam.mjs";
 import { to_string as uri_to_string } from "../gleam_stdlib/gleam/uri.mjs";
 import { method_to_string } from "../gleam_http/gleam/http.mjs";
 import { to_uri } from "../gleam_http/gleam/http/request.mjs";
@@ -45,11 +45,11 @@ function make_headers(headersList) {
 export async function read_bytes_body(response) {
   let body;
   try {
-    body = await response.body.text();
+    body = await response.body.arrayBuffer()
   } catch (error) {
     return new Error(new UnableToReadBody());
   }
-  return new Ok(response.withFields({ body }));
+  return new Ok(response.withFields({ body: toBitArray(new Uint8Array(body)) }));
 }
 
 export async function read_text_body(response) {

test/gleam_fetch_test.gleam

@@ -24,7 +24,7 @@ pub fn request_test() {
     let assert 200 = resp.status
     let assert Ok("application/json") =
       response.get_header(resp, "content-type")
-    // TODO let assert <<123, 34, 109, 101, 115, 115, 97, 103, 101, 34, 58, 34, 72, 101, 108, 108, 111, 32, 87, 111, 114, 108, 100, 34, 125>> = resp.body
+    let assert <<123, 34, 109, 101, 115, 115, 97, 103, 101, 34, 58, 34, 72, 101, 108, 108, 111, 32, 87, 111, 114, 108, 100, 34, 125>> = resp.body
     promise.resolve(Ok(Nil))
   })
 }