From f9f5fccfc9aa20ad2a171e6cf1fd8443282ad211 Mon Sep 17 00:00:00 2001
From: SkyJourney <sky.jiang.s.z@gmail.com>
Date: Sat, 1 Aug 2026 11:12:30 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E4=BF=AE=E5=A4=8D=E6=A1=8C=E9=9D=A2?=
 =?UTF-8?q?=E5=AD=97=E4=BD=93=E8=BD=AC=E6=8D=A2=E4=BE=9D=E8=B5=96=E5=90=AF?=
 =?UTF-8?q?=E5=8A=A8=E5=B4=A9=E6=BA=83?=
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---
 apps/desktop/scripts/build-main.mjs      |  5 ++++-
 apps/desktop/tests/release-build.test.ts | 17 +++++++++++++++++
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/apps/desktop/scripts/build-main.mjs b/apps/desktop/scripts/build-main.mjs
index 3bdc56d..d58b9f4 100644
--- a/apps/desktop/scripts/build-main.mjs
+++ b/apps/desktop/scripts/build-main.mjs
@@ -12,7 +12,10 @@ await build({
   banner: {
     js: [
       'import { createRequire as __mdToPdfCreateRequire } from "node:module";',
-      "const require = __mdToPdfCreateRequire(import.meta.url);"
+      'import { dirname as __mdToPdfDirname } from "node:path";',
+      'import { fileURLToPath as __mdToPdfFileURLToPath } from "node:url";',
+      "const require = __mdToPdfCreateRequire(import.meta.url);",
+      "const __dirname = __mdToPdfDirname(__mdToPdfFileURLToPath(import.meta.url));"
     ].join("\n")
   }
 });
diff --git a/apps/desktop/tests/release-build.test.ts b/apps/desktop/tests/release-build.test.ts
index 7574b1d..c060d47 100644
--- a/apps/desktop/tests/release-build.test.ts
+++ b/apps/desktop/tests/release-build.test.ts
@@ -92,6 +92,23 @@ describe("桌面发行构建链", () => {
     expect(buildScript).toContain("dist/docx-media-filter.lua");
   });
 
+  it("为 ESM 主进程中的 CommonJS 字体转换依赖保留 __dirname", () => {
+    const buildScript = readFileSync(
+      `${desktopRoot}/scripts/build-main.mjs`,
+      "utf8"
+    );
+
+    expect(buildScript).toContain(
+      'dirname as __mdToPdfDirname'
+    );
+    expect(buildScript).toContain(
+      'fileURLToPath as __mdToPdfFileURLToPath'
+    );
+    expect(buildScript).toContain(
+      "const __dirname = __mdToPdfDirname(__mdToPdfFileURLToPath(import.meta.url));"
+    );
+  });
+
   it("在 Docker Web 构建前复制样例并保留到运行镜像", () => {
     const dockerfile = readFileSync(
       `${projectRoot}/deploy/Dockerfile`,