v4 error  #12

undling index.js [development, non-minified] 0.0% (0/476), failed.% (0/476)
error: bundling failed: SyntaxError in /Users/leo/workspace/react-native-starter-kit/src/index.ts: /Users/leo/workspace/react-native-starter-kit/src/index.ts: Unexpected token (2:20)
1 | import I18n from 'react-native-i18n';

2 | import translations = require('./translations');
| ^
3 | import './utils/exceptionHandler';
4 |
5 | import {

感觉并不是认识 ts 的语法