feat: allow tree-shaking of unused transports

lib/transports/xmlhttprequest.ts → lib/globals.node.ts

@@ -1,6 +1,6 @@
-import * as XMLHttpRequestModule from "xmlhttprequest-ssl";
-
-export const XHR = XMLHttpRequestModule.default || XMLHttpRequestModule;
+export const nextTick = process.nextTick;
+export const globalThisShim = global;
+export const defaultBinaryType = "nodebuffer";
 
 export function createCookieJar() {
   return new CookieJar();

lib/transports/websocket-constructor.browser.ts → lib/globals.ts

@@ -1,5 +1,3 @@
-import { globalThisShim as globalThis } from "../globalThis.js";
-
 export const nextTick = (() => {
   const isPromiseAvailable =
     typeof Promise === "function" && typeof Promise.resolve === "function";
@@ -10,6 +8,16 @@ export const nextTick = (() => {
   }
 })();
 
-export const WebSocket = globalThis.WebSocket || globalThis.MozWebSocket;
-export const usingBrowserWebSocket = true;
+export const globalThisShim = (() => {
+  if (typeof self !== "undefined") {
+    return self;
+  } else if (typeof window !== "undefined") {
+    return window;
+  } else {
+    return Function("return this")();
+  }
+})();
+
 export const defaultBinaryType = "arraybuffer";
+
+export function createCookieJar() {}

lib/index.ts

@@ -1,13 +1,21 @@
 import { Socket } from "./socket.js";
 
 export { Socket };
-export { SocketOptions } from "./socket.js";
+export {
+  SocketOptions,
+  SocketWithoutUpgrade,
+  SocketWithUpgrade,
+} from "./socket.js";
 export const protocol = Socket.protocol;
 export { Transport, TransportError } from "./transport.js";
 export { transports } from "./transports/index.js";
 export { installTimerFunctions } from "./util.js";
 export { parse } from "./contrib/parseuri.js";
-export { nextTick } from "./transports/websocket-constructor.js";
+export { nextTick } from "./globals.node.js";
 
 export { Fetch } from "./transports/polling-fetch.js";
+export { XHR as NodeXHR } from "./transports/polling-xhr.node.js";
 export { XHR } from "./transports/polling-xhr.js";
+export { WS as NodeWebSocket } from "./transports/websocket.node.js";
+export { WS as WebSocket } from "./transports/websocket.js";
+export { WT as WebTransport } from "./transports/webtransport.js";