我正在使用Single SPA框架基于React创建微前端。
在运行构建时没有出现错误。但是在运行测试或覆盖率时,会抛出以下错误:
错误详情:
测试套件运行失败。
Jest encountered an unexpected token
This usually means that you are trying to import a file which Jest cannot parse, e.g. it's not plain JavaScript.
By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules".
Here's what you can do:
• If you are trying to use ECMAScript Modules, see https://jestjs.io/docs/en/ecmascript-modules for how to enable it.
• To have some of your "node_modules" files transformed, you can specify a custom "transformIgnorePatterns" in your config.
• If you need a custom transformation specify a "transform" option in your config.
• If you simply want to mock your non-JS modules (e.g. binary assets) you can stub them out with the "moduleNameMapper" config option.
You'll find more details and examples of these config options in the docs:
https://jestjs.io/docs/en/configuration.html
Details:
D:\source\projects\system-ui-components\node_modules\@babel\runtime\helpers\esm\extends.js:1
({"Object.<anonymous>":function(module,exports,require,__dirname,__filename,global,jest){export default function _extends() {
^^^^^^
SyntaxError: Unexpected token 'export'
经过分析,我的发现是:
- 问题出在展开运算符上。(如果去掉展开运算符就能正常工作)
- 在函数中使用展开运算符可以正常工作,但在 React 组件中却不行。
"presets": [
"@babel/preset-env",
"@babel/preset-react",
"@babel/preset-typescript"
],
"plugins": [
[
"@babel/plugin-transform-runtime",
{
"useESModules": true,
"regenerator": false
}
]
],
"env": {
"test": {
"presets": [
[
"@babel/preset-env",
{
"targets": "current node"
}
]
]
}
}
}
任何指导都将是有帮助的。
props
是什么? - WebbH