angular 19 项目运行 test 报错："Jest encountered an unexpected token"
0
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[已解决问题]
解决于 2024-12-24 10:32
angular 19 项目通过 jest 运行测试，报错
jest.config.ts 配置代码
import presets from 'jest-preset-angular/presets';
import { type JestConfigWithTsJest, pathsToModuleNameMapper } from 'ts-jest';
import { compilerOptions } from './tsconfig.json';
export default {
...presets.createCjsPreset(),
moduleNameMapper: {
...pathsToModuleNameMapper(compilerOptions.paths, { prefix: '<rootDir>' })
},
setupFilesAfterEnv: ['<rootDir>/setup-jest.ts'],
} satisfies JestConfigWithTsJest;
报错信息如下
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-transformationDetails:
node_modules\lodash-es\lodash.js:10
export { default as add } from './add.js';
^^^^^^
最佳答案
0
改为使用 esm 的 jest.config.ts 配置代码解决了，代码来自 jest-esm.config.ts
import ngPreset from 'jest-preset-angular/presets';
import { type JestConfigWithTsJest, pathsToModuleNameMapper } from 'ts-jest';
import tsconfig from './tsconfig.json';
const esmPreset = ngPreset.createEsmPreset();
export default {
...esmPreset,
moduleNameMapper: {
...esmPreset.moduleNameMapper,
...pathsToModuleNameMapper(tsconfig.compilerOptions.paths, { prefix: '<rootDir>' }),
rxjs: '<rootDir>/node_modules/rxjs/dist/bundles/rxjs.umd.js',
},
setupFilesAfterEnv: ['<rootDir>/setup-jest.ts'],
transform: {
'^.+\\.(ts|js|html|svg)$': [
'jest-preset-angular',
{
tsconfig: '<rootDir>/tsconfig.spec.json',
stringifyContentPathRegex: '\\.(html|svg)$',
useESM: true,
},
],
},
} satisfies JestConfigWithTsJest;
package.json 中对应的 test 配置
"test": "node --experimental-vm-modules --no-warnings node_modules/jest/bin/jest.js --config jest.config.ts"
