Add support for Cloudflare Workers (ethers-io#1886).

Author: ricmoo

packages/web/src.ts/browser-geturl.ts

@@ -9,16 +9,18 @@ export { GetUrlResponse, Options };
 export async function getUrl(href: string, options?: Options): Promise<GetUrlResponse> {
     if (options == null) { options = { }; }
 
-    const request = {
+    const request: RequestInit = {
         method: (options.method || "GET"),
         headers: (options.headers || { }),
         body: (options.body || undefined),
+    };
 
-        mode: <RequestMode>"cors",                       // no-cors, cors, *same-origin
-        cache: <RequestCache>"no-cache",                 // *default, no-cache, reload, force-cache, only-if-cached
-        credentials: <RequestCredentials>"same-origin",  // include, *same-origin, omit
-        redirect: <RequestRedirect>"follow",             // manual, *follow, error
-        referrer: "client",         // no-referrer, *client
+    if (options.skipFetchSetup !== true) {
+        request.mode = <RequestMode>"cors";              // no-cors, cors, *same-origin
+        request.cache = <RequestCache>"no-cache";        // *default, no-cache, reload, force-cache, only-if-cached
+        request.credentials = <RequestCredentials>"same-origin";  // include, *same-origin, omit
+        request.redirect = <RequestRedirect>"follow";    // manual, *follow, error
+        request.referrer = "client";                     // no-referrer, *client
     };
 
     const response = await fetch(href, request);

packages/web/src.ts/types.ts

@@ -1,16 +1,17 @@
 "use strict";
 
 export type GetUrlResponse = {
-    statusCode: number,
+    statusCode: number;
     statusMessage: string;
     headers: { [ key: string] : string };
     body: Uint8Array;
 };
 
 export type Options = {
-    method?: string,
+    method?: string;
     allowGzip?: boolean;
-    body?: Uint8Array
-    headers?: { [ key: string] : string },
+    body?: Uint8Array;
+    headers?: { [ key: string] : string };
+    skipFetchSetup?: boolean;
 };