写入文件增加文件锁，避免竞争条件引起文件内容异常

back/shared/utils.ts

@@ -0,0 +1,27 @@
+import { lock } from 'proper-lockfile';
+import { writeFile, open } from 'fs/promises';
+import { fileExist } from '../config/util';
+
+export async function writeFileWithLock(
+  path: string,
+  content: string | Buffer,
+  options: Parameters<typeof writeFile>[2] = {},
+) {
+  if (typeof options === 'string') {
+    options = { encoding: options };
+  }
+  if (!(await fileExist(path))) {
+    const fileHandle = await open(path, 'w');
+    fileHandle.close();
+  }
+  const release = await lock(path, {
+    retries: {
+      retries: 10,
+      factor: 2,
+      minTimeout: 100,
+      maxTimeout: 3000,
+    },
+  });
+  await writeFile(path, content, { encoding: 'utf8', ...options });
+  await release();
+}