我正在尝试使用jest(v19.0.2)w / my react native(v0.38.0)项目但是当我运行jest命令时,我收到以下错误:
● Test suite failed to run
/Users/kyledecot/code/root-react-native/node_modules/react-native/jest/setup.js:40
)
^
SyntaxError: Unexpected token )
at transformAndBuildScript (node_modules/jest-runtime/build/transform.js:320:12)
at handle (node_modules/worker-farm/lib/child/index.js:41:8)
at process.<anonymous> (node_modules/worker-farm/lib/child/index.js:47:3)
at emitTwo (events.js:106:13)
这是它抱怨的文件:
30 .mock('ReactNativeDefaultInjection')
31 .mock('Image', () => mockComponent('Image'))
32 .mock('Text', () => mockComponent('Text'))
33 .mock('TextInput', () => mockComponent('TextInput'))
34 .mock('Modal', () => mockComponent('Modal'))
35 .mock('View', () => mockComponent('View'))
36 .mock('ScrollView', () => mockComponent('ScrollView'))
37 .mock(
38 'ActivityIndicator',
39 () => mockComponent('ActivityIndicator'),
40 )
41 .mock('ListView', () => {
42 const RealListView = require.requireActual('ListView');
43 const ListView = mockComponent('ListView');
44 ListView.prototype.render = RealListView.prototype.render;
45 return ListView;
46 })
47 .mock('ListViewDataSource', () => {
48 const DataSource = require.requireActual('ListViewDataSource');
49 DataSource.prototype.toJSON = function() {
50 function ListViewDataSource(dataBlob) {
有没有其他人遇到这个错误或知道我将如何修复它?
我差不多一年后回答这个问题所以我无法验证这个版本是否可以在这些版本上运行,但我遇到了与React Native 53,Jest 21和TypeScript 2.7相同的问题
我的解决方案有3个部分:
package.json
,将以下内容添加到你的jest配置:```
{
jest: {
"moduleFileExtensions": ["ts", "tsx", "js", "json"],
"transform": {
"^.+\\.js$": "babel-jest",
"^.+\\.(ts|tsx)$": "<rootDir>/preprocessor.js"
},
}
}
```
preprocessor.js
文件(注意使用现有的tsconfig.json
文件):```
const tsc = require('react-native-typescript-transformer');
const tsConfig = require('./tsconfig.json');
module.exports = {
process(src, filename) {
if (filename.match(/\.png/)) {
return '';
}
if (filename.endsWith('.ts') || filename.endsWith('.tsx')) {
return tsc.transform(src, filename, tsConfig.compilerOptions);
}
return src;
},
};
```
npm install --S react-native-typescript-transformer
安装变压器库