fix: dir export with trailing comma

src/core/ctx.ts

@@ -106,8 +106,8 @@ export function createContext(options: Options = {}, root = process.cwd()) {
   async function scanDirs() {
     if (dirs?.length) {
       await unimport.modifyDynamicImports(async (imports) => {
-        const exports = await scanDirExports(dirs) as ImportExtended[]
-        exports.forEach(i => i.__source = 'dir')
+        const rawExports = await scanDirExports(dirs) as ImportExtended[]
+        const exports = rawExports.filter(i => i.name !== '' && (i.__source = 'dir'))
         return [
           ...imports.filter((i: ImportExtended) => i.__source !== 'dir'),
           ...exports,

test/__snapshots__/transform.test.ts.snap

@@ -1,5 +1,14 @@
 // Vitest Snapshot v1
 
+exports[`directories-export > trailing comma 1`] = `
+"// Generated by 'unplugin-auto-import'
+export {}
+declare global {
+  const a: typeof import('./export')['a']
+}
+"
+`;
+
 exports[`transform > comments.ts 1`] = `
 "import { ref, computed } from 'vue';
 /* import { ref } from 'vue' */

test/fixtures/dir-export-with-comma/export.ts

@@ -0,0 +1 @@
+export { a, } from "test";

test/transform.test.ts

@@ -98,3 +98,19 @@ describe('transform-vue-macro', async () => {
     })
   }
 })
+
+describe('directories-export', async () => {
+  const dirPath = 'test/fixtures/dir-export-with-comma'
+  const fileName = 'auto-imports.d.ts'
+  const filePath = `${dirPath}/${fileName}`
+  const ctx = createContext({
+    dts: filePath,
+    dirs: [dirPath],
+  })
+  await ctx.scanDirs()
+
+  it('trailing comma', async () => {
+    const fixture = await fs.readFile(filePath, 'utf-8')
+    expect(fixture).toMatchSnapshot()
+  })
+})