可重現的倉庫：https : //github.com/hutber/cannotusestatement
更令人擔憂的是：https : //codesandbox.io/s/vigilant-bartik-bmz8x在測驗通過的沙箱中。但是，如果您簽出上述已匯入此沙箱的存盤庫，它將不會在本地傳遞。
我毫不懷疑問題是我的笑話沒有編譯運行我的測驗所需的 node_modules。但我現在對如何讓它作業一無所知。
我只是希望能夠運行測驗。他們目前不運行
測驗
import React from 'react'
import { renderWithThemeProvider, screen } from 'test-utils'
import { Select } from './Select'
it('renders correctly', () => {
const tree = renderWithThemeProvider(<Select id="testSelect"></Select>)
expect(tree).toMatchSnapshot()
})
開玩笑的組態檔
module.exports = {
roots: ['<rootDir>', './src'],
moduleDirectories: ['<rootDir>', 'node_modules/', './src'],
transform: {
'^. \\.(ts|tsx)$': 'ts-jest',
},
testEnvironment: 'jsdom',
testMatch: ['**/*.test.(ts|tsx)', '**/__tests__/*.(ts|tsx)'],
moduleNameMapper: {
// Mocks out all these file formats when tests are run
'\\.(jpg|ico|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$': 'identity-obj-proxy',
'\\.(css|less|scss|sass)$': 'identity-obj-proxy',
'app-config': '<rootDir>/app-config/default',
'^@components(.*)$': '<rootDir>/src/components$1',
'^@themes(.*)$': '<rootDir>/src/themes$1',
},
coverageThreshold: {
global: {
statements: 50,
},
},
}
babel.config.js
module.exports = {
presets: ['@babel/preset-env', '@babel/preset-react'],
env: {
test: {
presets: ['@babel/preset-env', '@babel/preset-react'],
plugins: [
[
'babel-plugin-transform-imports',
'@babel/plugin-proposal-class-properties',
'transform-es2015-modules-commonjs',
'babel-plugin-dynamic-import-node',
'babel-plugin-styled-components',
],
},
},
}
包.json
"test": "jest --watchAll=false",
紗線測驗
(base) hutber@hutber:/var/www/target/component-library$ yarn test src/components/Select/Select.test.tsx
yarn run v1.22.17
$ jest --watchAll=false src/components/Select/Select.test.tsx
FAIL src/components/Select/Select.test.tsx
● Test suite failed to run
Jest encountered an unexpected token
Jest failed to parse a file. This happens e.g. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such syntax.
Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your Babel configuration.
By default "node_modules" folder is ignored by transformers.
Here's what you can do:
? If you are trying to use ECMAScript Modules, see https://jestjs.io/docs/ecmascript-modules for how to enable it.
? If you are trying to use TypeScript, see https://jestjs.io/docs/getting-started#using-typescript
? 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/configuration
For information about custom transformations, see:
https://jestjs.io/docs/code-transformation
Details:
/var/www/target/component-library/node_modules/@mui/material/styles/styled.js:1
({"Object.<anonymous>":function(module,exports,require,__dirname,__filename,jest){import { createStyled, shouldForwardProp } from '@mui/system';
^^^^^^
SyntaxError: Cannot use import statement outside a module
1 | import React from 'react'
> 2 | import styled from '@mui/material/styles/styled'
| ^
3 |
4 | import MuiSelect, { SelectProps as MuiSelectProps } from '@mui/material/Select'
5 | import InputLabel from '@mui/material/InputLabel'
at Runtime.createScriptFromCode (node_modules/jest-runtime/build/index.js:1728:14)
at Object.<anonymous> (src/components/Select/Select.tsx:2:1)
Test Suites: 1 failed, 1 total
Tests: 0 total
Snapshots: 0 total
Time: 3.272 s
import React from 'react'
import styled from '@mui/material/styles/styled'
import MuiSelect, { SelectProps as MuiSelectProps } from '@mui/material/Select'
import InputLabel from '@mui/material/InputLabel'
import MenuItem from '@mui/material/MenuItem'
import MuiFormControl from '@mui/material/FormControl'
interface ISelect extends MuiSelectProps {
id: string
label?: string
options?: { text: string; option: string }[]
}
const FormControl = styled(MuiFormControl)`
color: #fff;
border-radius: 30px;
width: 180px;
`
export const Select: React.FC<ISelect> = ({ label, id, children, options, ...props }) => {
return (
// @ts-ignore
<FormControl fullWidth hiddenLabel>
{label && (
<InputLabel id={`input_${id}`} shrink={false}>
{label}
</InputLabel>
)}
<MuiSelect id={id} {...props}>
{options && options.map(({ text, option }: { text: string; option: string }) => <MenuItem value={option}>{text}</MenuItem>)}
{children && children}
</MuiSelect>
</FormControl>
)
}
export default Select
uj5u.com熱心網友回復：
首先，您的Select.tsx檔案中有兩個匯出。只需使用默認匯出，因此將第 20 行更改為：
const Select: React.FC<ISelect> = ({ label, id, children, options, ...props }) => {
然后在您的Select.test.tsx檔案中更改為：
import Select from './Select'
最后要解決匯入問題，請將您的代碼更改Select.tsx為：
import { styled } from '@mui/material'
這是一個相當普遍的問題，可以在這里看到。
轉載請註明出處，本文鏈接：https://www.uj5u.com/qiye/365184.html
標籤：javascript 反应 玩笑 babeljs 反应测试库