Simplify proxy environment setup in request.js

Removed undici proxy agent configuration and related error handling. Now only sets NODE_USE_ENV_PROXY to encourage Node to honor standard proxy environment variables.

.github/workflows/test.yml

@@ -44,6 +44,8 @@ jobs:
       - run: npm run build
       - uses: ./ # Uses the action in the root directory
         id: test
+        env:
+          https_proxy: https://example.com
         with:
           app-id: ${{ vars.TEST_APP_ID }}
           private-key: ${{ secrets.TEST_APP_PRIVATE_KEY }}

lib/request.js

@@ -1,6 +1,13 @@
 import core from "@actions/core";
 import { request } from "@octokit/request";
 
+/* c8 ignore start -- env knob setup */
+// Encourage Node to honor standard *_PROXY vars for core HTTP(S) agents.
+if (process.env.NODE_USE_ENV_PROXY == null) {
+  process.env.NODE_USE_ENV_PROXY = "1";
+}
+/* c8 ignore stop */
+
 // Get the GitHub API URL from the action input and remove any trailing slash
 const baseUrl = core.getInput("github-api-url").replace(/\/$/, "");
 

main.js

@@ -1,5 +1,4 @@
 // @ts-check
-
 import core from "@actions/core";
 import { createAppAuth } from "@octokit/auth-app";
 
@@ -38,7 +37,7 @@ export default main(
   core,
   createAppAuth,
   request,
-  skipTokenRevoke,
+  skipTokenRevoke
 ).catch((error) => {
   /* c8 ignore next 3 */
   console.error(error);