diff --git a/__test__/export-declaration.test.ts b/__test__/export-declaration.test.ts
index 37255a2..a83dd03 100644
--- a/__test__/export-declaration.test.ts
+++ b/__test__/export-declaration.test.ts
@@ -109,13 +109,19 @@ const TEST_TABLE = [
 
 // ts doesn't allow this
 // in swc js, need to turn on this by
-test.skip('export x from "a"', () => {
-  try {
-    const json = parseCode(`export x from "a"`);
-  } catch (e) {
-    console.log(e);
-    fail(e);
-  }
+test('export x from "a"', () => {
+  const imps = parseCode(`export x from "a"`, 'x.js');
+  expect(imps).toEqual(
+    [{
+      "type": "ExportNamedDeclaration",
+      "specifiers": [{"exported": "x", "type": "ExportDefaultSpecifier"}],
+      "exportKind": "value",
+      "source": "a",
+      "start": expect.any(Number),
+      "end": expect.any(Number),
+    }]
+  )
+
 })
 
 test.skip('export type * from "a"', () => {
diff --git a/__test__/performance.test.ts b/__test__/performance.test.ts
index c6df88d..5054167 100644
--- a/__test__/performance.test.ts
+++ b/__test__/performance.test.ts
@@ -2,16 +2,16 @@
 
 import {readFileSync} from 'fs'
 import {join} from "path";
+// @ts-ignore
 import {parseFiles, parseFilesJsonStr} from "../index";
 
 let files: string[] = [];
 
 try {
-  files = readFileSync(join(__dirname, 'list.txt'), 'utf-8').trim().split('\n');
+  files = readFileSync(join(__dirname, 'list.txt'), 'utf-8').trim().split('\n')
 } catch (e) {
 }
 
-
 if (files.length === 0) {
   console.error('if you want to run performance test, put files list in __test__/list.txt')
   console.error('a file path per line')
@@ -23,7 +23,7 @@ if (files.length === 0) {
     const duration = Date.now() - start;
 
     console.log(
-      `[JSON] parse ${files.length} files, cost ${duration}ms, average ${duration / files.length}ms per file`
+      `[JSONString] parse ${files.length} files, cost ${duration}ms, average ${duration / files.length}ms per file`
     )
   })
 
@@ -33,10 +33,10 @@ if (files.length === 0) {
     const duration = Date.now() - start;
 
     console.log(
-      `[Object] parse ${files.length} files, cost ${duration}ms, average ${duration / files.length}ms per file`
+      `[  Object  ] parse ${files.length} files, cost ${duration}ms, average ${duration / files.length}ms per file`
     )
   })
 }
 
-it.skip('bypass jest error', () => {
+it('bypass jest error', () => {
 });
\ No newline at end of file