我运行了该项目。 npx react-native run-android为什么会发生此错误?我需要指导来解决此问题。
Looking for JS files in
D:\React native projects\appOne
Loading dependency graph, done.
error: bundling failed: SyntaxError: D:\React native projects\appOne\node_modules\@react-navigation\routers\src\index.tsx: Unexpected token (9:12)
7 | export { default as StackRouter, StackActions } from './StackRouter';
8 |
> 9 | export type {
| ^
10 | StackActionHelpers,
11 | StackActionType,
12 | StackRouterOptions,
at Object.raise (D:\React native projects\appOne\node_modules\@babel\core\node_modules\@babel\parser\lib\index.js:6387:17)
at Object.unexpected (D:\React native projects\appOne\node_modules\@babel\core\node_modules\@babel\parser\lib\index.js:7704:16)
at Object.parseIdentifierName (D:\React native projects\appOne\node_modules\@babel\core\node_modules\@babel\parser\lib\index.js:9592:18)
at Object.parseIdentifier (D:\React native projects\appOne\node_modules\@babel\core\node_modules\@babel\parser\lib\index.js:9570:23)
at Object.tsParseTypeAliasDeclaration (D:\React native projects\appOne\node_modules\@babel\core\node_modules\@babel\parser\lib\index.js:4793:20)
at Object.tsParseDeclaration (D:\React native projects\appOne\node_modules\@babel\core\node_modules\@babel\parser\lib\index.js:5111:23)
at Object.tsTryParseExportDeclaration (D:\React native projects\appOne\node_modules\@babel\core\node_modules\@babel\parser\lib\index.js:5020:17)
at Object.parseExportDeclaration (D:\React native projects\appOne\node_modules\@babel\core\node_modules\@babel\parser\lib\index.js:5497:26)
at Object.maybeParseExportDeclaration (D:\React native projects\appOne\node_modules\@babel\core\node_modules\@babel\parser\lib\index.js:11038:31)
at Object.parseExport (D:\React native projects\appOne\node_modules\@babel\core\node_modules\@babel\parser\lib\index.js:10967:29)
BUNDLE [android, dev] ./index.js ▓▓▓▓░░░░░░░░░░░░ 30.9% (266/496), failed.
::ffff:127.0.0.1 - - [08/Jun/2020:19:52:38 +0000] "GET /index.bundle?platform=android&dev=true&minify=false HTTP/1.1" 500 - "-" "okhttp/3.12.1"
我测试了npx react-native start --reset-cach
,但没有用。
仅类型imports
和exports
是TypeScript
中的新功能。 Babel通过此merge request添加了仅支持类型的导入/导出,并且可以从7.9.0
版本开始使用>
如下所示更新您的babel版本:
"devDependencies": { "@babel/core": "^7.9.0", "@babel/runtime": "^7.9.2", //other dev dependencies }
您可能需要删除
node_modules
,重新安装并清除缓存。