fix(release): preserve npm pack json output

vincentkoc · vincentkoc · commit 74214000bf48 · 2026-06-24T09:19:00.000+02:00
diff --git a/scripts/openclaw-prepack.ts b/scripts/openclaw-prepack.ts
@@ -117,17 +117,29 @@ export function resolvePrepackCommandTimeoutMs(env: NodeJS.ProcessEnv = process.
   );
 }
 
+export function resolvePrepackCommandStdio(
+  options: SpawnSyncOptions,
+  env: NodeJS.ProcessEnv = process.env,
+): SpawnSyncOptions["stdio"] {
+  const requestedStdio = options.stdio ?? "inherit";
+  const npmJsonOutput = env.npm_config_json === "true" || env.npm_config_json === "1";
+  if (npmJsonOutput && requestedStdio === "inherit") {
+    return ["inherit", 2, "inherit"];
+  }
+  return requestedStdio;
+}
+
 export function runPrepackCommand(
   command: string,
   args: string[],
   options: SpawnSyncOptions = {},
 ): ReturnType<typeof spawnSync> {
   const env = options.env ?? process.env;
   return spawnSync(command, args, {
-    stdio: "inherit",
     ...options,
     env,
     killSignal: options.killSignal ?? "SIGKILL",
+    stdio: resolvePrepackCommandStdio(options, env),
     timeout: options.timeout ?? resolvePrepackCommandTimeoutMs(env),
   });
 }
diff --git a/test/openclaw-prepack.test.ts b/test/openclaw-prepack.test.ts
@@ -2,6 +2,7 @@
 import { describe, expect, it } from "vitest";
 import {
   collectPreparedPrepackErrors,
+  resolvePrepackCommandStdio,
   resolvePrepackCommandTimeoutMs,
   runPrepackCommand,
 } from "../scripts/openclaw-prepack.ts";
@@ -26,6 +27,20 @@ describe("collectPreparedPrepackErrors", () => {
 });
 
 describe("runPrepackCommand", () => {
+  it("keeps prepack child stdout off npm pack JSON stdout", () => {
+    expect(resolvePrepackCommandStdio({ stdio: "inherit" }, { npm_config_json: "true" })).toEqual([
+      "inherit",
+      2,
+      "inherit",
+    ]);
+    expect(
+      resolvePrepackCommandStdio(
+        { stdio: ["ignore", "pipe", "pipe"] },
+        { npm_config_json: "true" },
+      ),
+    ).toEqual(["ignore", "pipe", "pipe"]);
+  });
+
   it("returns captured output for successful commands", () => {
     const result = runPrepackCommand(process.execPath, ["--eval", "process.stdout.write('ok')"], {
       encoding: "utf8",
