Fix OpenScript.fetch JSON IPC serialization for text and binary

src/utils/fetch.js

@@ -1,9 +1,25 @@
 const NULL_BODY_STATUSES = new Set([101, 204, 205, 304]);
 
+const toBase64 = buffer => {
+  const bytes = new Uint8Array(buffer);
+  let bin = '';
+  for (let i = 0; i < bytes.byteLength; i += 8192) {
+    bin += String.fromCharCode(...bytes.subarray(i, Math.min(i + 8192, bytes.byteLength)));
+  }
+  return btoa(bin);
+};
+
 export const runScriptFetch = async (url, options = {}) => {
   const res = await fetch(url, options);
   const { status, statusText } = res;
   const headers = [...res.headers.entries()];
-  const body = NULL_BODY_STATUSES.has(status) ? null : await res.arrayBuffer();
+  if (NULL_BODY_STATUSES.has(status)) {
+    return { status, statusText, headers, url: res.url, body: null };
+  }
+  if (['arraybuffer', 'blob'].includes(options?.responseType)) {
+    const buffer = await res.arrayBuffer();
+    return { status, statusText, headers, url: res.url, base64: toBase64(buffer) };
+  }
+  const body = await res.text();
   return { status, statusText, headers, url: res.url, body };
 };

src/utils/userScripts.js

@@ -42,7 +42,17 @@ ${code}
       type: '${FETCH_MESSAGE}', url: url.toString(), options: { ...rest, headers, body },
     });
     if (!response?.ok) throw new TypeError(response?.error || 'OpenScript fetch failed');
-    const resBody = [101, 204, 205, 304].includes(response.status) ? null : response.body;
+    let resBody = null;
+    if (![101, 204, 205, 304].includes(response.status)) {
+      if (response.base64 !== undefined) {
+        const bin = atob(response.base64);
+        const bytes = new Uint8Array(bin.length);
+        for (let i = 0; i < bin.length; i++) bytes[i] = bin.charCodeAt(i);
+        resBody = bytes.buffer;
+      } else {
+        resBody = response.body ?? null;
+      }
+    }
     const res = new Response(resBody, {
       status: response.status, statusText: response.statusText, headers: response.headers,
     });

src/version.js

@@ -1 +1 @@
-export const VERSION = '1.0.4';
+export const VERSION = '1.0.5';