fix: retry writing traced files if there are conflicts

src/rollup/plugins/externals.ts

@@ -220,7 +220,7 @@ export function externals (opts: NodeExternalsOptions): Plugin {
         }
       }
 
-      const writeFile = async (file) => {
+      const writeFile = async (file: string) => {
         if (!await isFile(file)) { return }
         const src = resolve(opts.traceOptions.base, file)
         const { pkgName, subpath } = parseNodeModulePath(file)
@@ -230,7 +230,7 @@ export function externals (opts: NodeExternalsOptions): Plugin {
       }
 
       // Write traced files
-      await Promise.all(tracedFiles.map(writeFile))
+      await Promise.all(tracedFiles.map(file => retry(() => writeFile(file), 3)))
 
       // Write an informative package.json
       await fsp.writeFile(resolve(opts.outDir, 'package.json'), JSON.stringify({
@@ -264,3 +264,15 @@ async function isFile (file: string) {
     throw err
   }
 }
+
+async function retry (fn: () => Promise<void>, retries: number) {
+  let retry = 0
+  let error: any
+  while (retry++ < retries) {
+    try { return await fn() } catch (err) {
+      error = err
+      await new Promise(resolve => setTimeout(resolve, 2))
+    }
+  }
+  throw error
+}