perf: add typed arrays

Author: iiio2

src/fetch.ts

@@ -16,7 +16,7 @@ import type {
 } from "./types";
 
 // https://developer.mozilla.org/en-US/docs/Web/HTTP/Status
-const retryStatusCodes = new Set([
+const retryStatusCodes = new Set(new Int16Array([
   408, // Request Timeout
   409, // Conflict
   425, // Too Early (Experimental)
@@ -25,10 +25,10 @@ const retryStatusCodes = new Set([
   502, // Bad Gateway
   503, // Service Unavailable
   504, // Gateway Timeout
-]);
+]));
 
 // https://developer.mozilla.org/en-US/docs/Web/API/Response/body
-const nullBodyResponses = new Set([101, 204, 205, 304]);
+const nullBodyResponses = new Set(new Int16Array([101, 204, 205, 304]));
 
 export function createFetch(globalOptions: CreateFetchOptions = {}): $Fetch {
   const {