问题：
vite报错:UnhandledPromiseRejectionWarning: SyntaxError: Unexpected token '??='
今天clone一个vite的项目，安装依赖后运行npm run dev报错：
UnhandledPromiseRejectionWarning: SyntaxError: Unexpected token '??='
at Loader.moduleStrategy (internal/modules/esm/translators.js:145:18)
(Use `node --trace-warnings ...` to show where the warning was created)
(node:8744) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
......
看了半天不明所以，搜索后也没发现靠谱方案，之前在别的机器上是能正常运行，想到可能是nodejs（v12）版本低的问题
解决：
升级nodejs（到v18）再运行，果然问题解决。
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