Jestjs 如何编写Jest transformIgnorePatterns
我有这个借口Jestjs 如何编写Jest transformIgnorePatterns,jestjs,Jestjs,我有这个借口 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,
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:
• 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:
C:\Code\SPFx\BCO\node_modules\@microsoft\sp-core-library\lib\index.js:11
export { default as _BrowserDetection } from './BrowserDetection';
^^^^^^
SyntaxError: Unexpected token export
19 | } from 'office-ui-fabric-react/lib/Utilities';
20 | import { IUserProvider } from "../UserProviders/IUserProvider";
> 21 | import {
| ^
22 | Environment,
23 | EnvironmentType
24 | } from '@microsoft/sp-core-library';
at ScriptTransformer._transformAndBuildScript (node_modules/jest/node_modules/jest-runtime/build/script_transformer.js:403:17)
at Object.<anonymous> (src/webparts/BCO/components/EmployeeSelector/EmployeeSelector.tsx:21:1)
at Object.<anonymous> (src/webparts/BCO/components/FieldMapping/FieldMapping.tsx:13:1)
他们都没有成功。我在Windows 10上运行了这个程序,所以我也尝试了格式化
transformIgnorePatterns
意味着如果测试路径与任何模式匹配,它将不会被转换
注意:不要拆分多行
默认情况下,jest将忽略所有节点模块
所以你必须这样写:
“transformIgnorePatterns”:[
//所有例外情况必须在第一行
“/node_modules/(?!@microsoft/sp核心库| sp dialog |其他_库_需要_转换)”
],
我将此设置添加到配置中,但没有乐趣。还是和Sergey Aslanvov犯了同样的错误
"transformIgnorePatterns": [
"/node_modules/(?!@vuetify)"
],
也试过
"transformIgnorePatterns": [
"\\node_modules\\@vuetify",
],
下面是扩展VDataTable的组件示例
import {
Vue,
Mixins,
Component,
} from 'vue-property-decorator';
import { VDataTable } from 'vuetify/lib';
@Component
export class BPagedGrid extends Mixins(Vue, VDataTable) { }
在使用jest、webpack和vanilla js进行项目时,我遇到了一个类似的错误,因此当jest遇到这行代码
import'../css/styles.css'时就会抛出错误任何/*?.js$/
文件中的code>
我通过将jest配置从package.json
文件移动到jest.config.js
文件,并使用以下最小配置解决了这个问题:
//jest.config.js
module.exports=
“moduleNameMapper”:{
“\\(css |减去| scss)$”:“标识obj代理”
}
}
然后在babel.config.js
中:
module.exports={
预设:[
[
“@babel/preset env”,
{
目标:{
节点:“当前”,
},
},
],
],
};
事实上,typescript似乎不适合JEST测试用例,所以我觉得JEST需要忽略那些文件,或者那些包需要传输到JEST可以理解的js代码中
你可以试试这个
"transformIgnorePatterns": [ "node_modules/(?!(@microsoft/sp-core-library))" ],
在tsconfig.json中
"transformIgnorePatterns": [
"\\node_modules\\@microsoft\\sp-dialog",
"\\node_modules\\@microsoft\\sp-core-library",
"node_modules/(?!sp-core-library)",
"node_modules/(?!@microsoft/sp-core-library)"
],
"allowJs": true,
欲了解更多详情,请查看此帖子
有人知道如何解决这个问题吗?在我的例子中,我有一些扩展Vuetify组件的组件(即从“Vuetify/lib”导入{VDataTable})。JEST文档严重缺乏这种复杂的配置。更实用、更常见的示例可能会有所帮助。请尝试“@microsoft[/\\\]sp dialog”
,或者更可能是“@microsoft[/\\\\]sp dialog”
。我认为这里需要双重逃逸。你用的是哪种技术?是react/react native吗?Dipen Shah,我正在使用VueJS v2这一款似乎适合我