chore: don't bundle undici (#3475)

package.json

@@ -35,9 +35,9 @@
     "@octokit/plugin-paginate-rest": "^11.3.5",
     "@octokit/plugin-rest-endpoint-methods": "^13.2.6",
     "@octokit/plugin-throttling": "^9.3.2",
+    "node-fetch-native": "^1.6.4",
     "p-limit": "^6.1.0",
     "proxy-from-env": "^1.1.0",
-    "undici": "^6.20.1",
     "uuid": "^9.0.1"
   },
   "devDependencies": {
@@ -58,6 +58,7 @@
     "js-yaml": "^4.1.0",
     "prettier": "^3.3.3",
     "ts-jest": "^29.2.5",
-    "typescript": "^5.6.3"
+    "typescript": "^5.6.3",
+    "undici": "^6.20.1"
   }
 }

src/octokit-client.ts

@@ -4,7 +4,7 @@ import {paginateRest} from '@octokit/plugin-paginate-rest'
 import {restEndpointMethods} from '@octokit/plugin-rest-endpoint-methods'
 import {throttling} from '@octokit/plugin-throttling'
 import {getProxyForUrl} from 'proxy-from-env'
-import {ProxyAgent, fetch as undiciFetch} from 'undici'
+import {createFetch} from 'node-fetch-native/proxy'
 export {RestEndpointMethodTypes} from '@octokit/plugin-rest-endpoint-methods'
 // eslint-disable-next-line import/no-unresolved
 export {OctokitOptions} from '@octokit/core/dist-types/types'
@@ -33,23 +33,12 @@ export const throttleOptions = {
   }
 }
 
-const proxyFetch =
-  (proxyUrl: string): typeof undiciFetch =>
-  (url, opts) => {
-    return undiciFetch(url, {
-      ...opts,
-      dispatcher: new ProxyAgent({
-        uri: proxyUrl
-      })
-    })
-  }
-
 // Octokit plugin to support the standard environment variables http_proxy, https_proxy and no_proxy
 function autoProxyAgent(octokit: OctokitCore) {
   octokit.hook.before('request', options => {
     const proxy = getProxyForUrl(options.baseUrl)
     if (proxy) {
-      options.request.fetch = proxyFetch(proxy)
+      options.request.fetch = createFetch(proxy)
     }
   })
 }