fix: keep undici compatible with node 20

- Pin the runtime and publish bundle dependency to undici 6.x

- Add publish smoke coverage for the installed undici engine floor

Co-Authored-By: devagent <devagent@egavrin>

Author: egavrin

bun.lock

@@ -25,7 +25,7 @@
     "node-html-markdown": "^2.0.0",
     "smol-toml": "^1.3.0",
     "typescript": "^5.9.3",
-    "undici": "^8.1.0",
+    "undici": "^6.22.0",
     "vscode-jsonrpc": "^8.2.1",
     "vscode-languageserver-protocol": "^3.17.5"
   },

packages/runtime/package.json

@@ -104,7 +104,7 @@ const distPkg = {
     "typescript": "^5.7.0",
     "pyright": "^1.1.0",
     "bash-language-server": "^5.4.0",
-    "undici": "^8.1.0",
+    "undici": "^6.22.0",
   },
 };
 

scripts/bundle.ts

@@ -5,6 +5,7 @@ import { cpSync, existsSync, mkdirSync, mkdtempSync, readFileSync, rmSync, write
 import { tmpdir } from "node:os";
 import { dirname, join, resolve } from "node:path";
 
+import { MINIMUM_NODE_MAJOR } from "../packages/cli/src/runtime-version.ts";
 import type { ChildProcessWithoutNullStreams } from "node:child_process";
 
 const ROOT = resolve(import.meta.dirname, "..");
@@ -27,6 +28,7 @@ async function main(): Promise<void> {
   const npmBin = resolveNpmBinary();
   const stagedDist = stagePublishRuntime();
   installPublishDependencies(stagedDist, npmBin, nodeBin);
+  verifyInstalledUndici(stagedDist, nodeBin);
   const expectedVersion = JSON.parse(readFileSync(join(stagedDist, "package.json"), "utf-8")).version as string;
 
   const isolatedHome = mkdtempSync(join(tmpdir(), "devagent-bundle-smoke-"));
@@ -294,6 +296,30 @@ function installPublishDependencies(stagedDist: string, npmBin: string, nodeBin:
   }
 }
 
+function verifyInstalledUndici(stagedDist: string, nodeBin: string): void {
+  const script = `const undici = require("undici");
+const pkg = require("undici/package.json");
+const engine = pkg.engines?.node;
+const match = typeof engine === "string" ? />=\\s*(\\d+)/.exec(engine) : null;
+if (typeof undici.EnvHttpProxyAgent !== "function") throw new Error("Expected undici to expose EnvHttpProxyAgent.");
+if (!match) throw new Error("Unable to parse undici engines.node: " + String(engine));
+if (Number.parseInt(match[1], 10) > ${MINIMUM_NODE_MAJOR}) throw new Error("Installed undici requires Node " + engine + ", but DevAgent publishes node >=${MINIMUM_NODE_MAJOR}.");`;
+  const result = spawnSync(
+    nodeBin,
+    ["-e", script],
+    {
+      cwd: stagedDist,
+      env: buildNodePreferredEnv(nodeBin),
+      encoding: "utf-8",
+      stdio: "pipe",
+    },
+  );
+
+  if (result.status !== 0) {
+    throw new Error(`Installed undici publish dependency is incompatible: ${`${result.stdout}${result.stderr}`.trim()}`);
+  }
+}
+
 function buildNodePreferredEnv(nodeBin: string): NodeJS.ProcessEnv {
   const nodeDir = dirname(nodeBin);
   const pathSeparator = process.platform === "win32" ? ";" : ":";