From 3ff12ce23787d9592050dbd1f2a5e191613dc81f Mon Sep 17 00:00:00 2001
From: "zhanghang.heal" <zhanghang.heal@bytedance.com>
Date: Thu, 20 Nov 2025 17:44:57 +0800
Subject: [PATCH] fix(retry-plugin): add autoParseResponse to auto-select JSON
 or text based on file extension

---
 .changeset/thirty-cooks-dream.md         |  5 +++++
 packages/retry-plugin/src/fetch-retry.ts | 14 +++++++++++++-
 2 files changed, 18 insertions(+), 1 deletion(-)
 create mode 100644 .changeset/thirty-cooks-dream.md

diff --git a/.changeset/thirty-cooks-dream.md b/.changeset/thirty-cooks-dream.md
new file mode 100644
index 00000000000..b7b63084440
--- /dev/null
+++ b/.changeset/thirty-cooks-dream.md
@@ -0,0 +1,5 @@
+---
+'@module-federation/retry-plugin': patch
+---
+
+fix(retry-plugin): add autoParseResponse to auto-select JSON or text based on file extension
diff --git a/packages/retry-plugin/src/fetch-retry.ts b/packages/retry-plugin/src/fetch-retry.ts
index 8b43396da9d..0553860654e 100644
--- a/packages/retry-plugin/src/fetch-retry.ts
+++ b/packages/retry-plugin/src/fetch-retry.ts
@@ -9,6 +9,18 @@ import {
 import logger from './logger';
 import { getRetryUrl, combineUrlDomainWithPathQuery } from './utils';
 
+function autoParseResponse(url: string, response: Response) {
+  try {
+    const parsed = new URL(url);
+    if (parsed.pathname.endsWith('.js')) {
+      return response.text();
+    }
+    return response.json();
+  } catch (error) {
+    return response.json();
+  }
+}
+
 async function fetchRetry(
   params: FetchRetryOptions,
   lastRequestUrl?: string,
@@ -63,7 +75,7 @@ async function fetchRetry(
         `${PLUGIN_IDENTIFIER}: Request failed: ${response.status} ${response.statusText || ''} | url: ${requestUrl}`,
       );
     }
-    await responseClone.json().catch((error) => {
+    await autoParseResponse(requestUrl, responseClone).catch((error) => {
       throw new Error(
         `${PLUGIN_IDENTIFIER}: JSON parse failed: ${(error as Error)?.message || String(error)} | url: ${requestUrl}`,
       );