Respect proxy from environment (#41240)

We previously weren't respecting the http proxy from the environment. This was causing cloud coding tools like Codex to fail because they proxy all requests.

Tested this to confirm it works properly.

GitOrigin-RevId: 0e09823f5b5102a0c25a8d5c892104de53cbf68c

Author: jordanhunt22

package.json

@@ -338,6 +338,7 @@
     "typescript": "~5.0.3",
     "typescript-eslint": "~8.38.0",
     "vitest": "^3.2.4",
+    "undici": "7.11.0",
     "wait-for-expect": "~4.0.0",
     "ws": "8.18.0",
     "zod": "^3.24.0",

src/cli/index.ts

@@ -32,6 +32,8 @@ import { mcp } from "./mcp.js";
 import dns from "node:dns";
 import net from "node:net";
 import { integration } from "./integration.js";
+import { setGlobalDispatcher, ProxyAgent } from "undici";
+import { logVerbose } from "../bundler/log.js";
 
 const MINIMUM_MAJOR_VERSION = 16;
 const MINIMUM_MINOR_VERSION = 15;
@@ -46,6 +48,12 @@ async function main() {
   const majorVersion = parseInt(nodeVersion.split(".")[0], 10);
   const minorVersion = parseInt(nodeVersion.split(".")[1], 10);
 
+  const proxy = process.env.HTTPS_PROXY || process.env.HTTP_PROXY;
+  if (proxy) {
+    setGlobalDispatcher(new ProxyAgent(proxy));
+    logVerbose(`[proxy-bootstrap] Using proxy: ${proxy}`);
+  }
+
   // Use ipv4 first for 127.0.0.1 in tests
   dns.setDefaultResultOrder("ipv4first");