Jest 在将 Svelte v3 升级到 v4 期间遇到意外令牌

Question

我在使用官方指南将 svelte v3 升级到 v4 的过程中陷入困境。 我的测试失败了，我尝试了多种方法来修复它，但对我来说没有任何效果。这里有一些关于我的 svelte 应用程序的详细信息。

// jest.config.js
module.exports = {
    testEnvironment: "jsdom",
    transform: {
        '^.+\\.js$': 'babel-jest',
        '^.+\\.svelte$': 'svelte-jester'
    }
};

//package.json
Package.json
{
  "name": "svelte-app",
  "version": "1.0.0",
  "devDependencies": {
    "@babel/core": "7.23.2",
    "@babel/preset-env": "7.23.2",
    "@ironkinoko/rollup-plugin-styles": "4.0.3",
    "@rollup/plugin-commonjs": "25.0.7",
    "@rollup/plugin-node-resolve": "15.2.3",
    "@rollup/plugin-replace": "5.0.5",
    "@rollup/plugin-terser": "0.4.4",
    "@testing-library/dom": "7.31.2",
    "@testing-library/jest-dom": "5.17.0",
    "@testing-library/svelte": "^4.0.0",
    "babel-jest": "29.7.0",
    "jest": "29.7.0",
    "jest-environment-jsdom": "29.7.0",
    "rollup": "4.2.0",
    "rollup-plugin-livereload": "2.0.5",
    "rollup-plugin-svelte": "7.1.6",
    "svelte": "^4.0.0",
    "svelte-jester": "3.0.0",
    "testing-library-table-queries": "0.2.0"
  },
  "dependencies": {
    "sirv-cli": "2.0.2",
    "svelte-spinner": "2.0.2"
  },
  "scripts": {
    "build": "rollup -c",
    "dev": "rollup -c -w",
    "start": "sirv public",
    "test": "jest",
    "test-watch": "jest --watchAll"
  }
 

例外：

FAIL  src/EnummerEditor.spec.js
  ● 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:
 
    /Users/user123/code/zapp/zapp-config-ui/node_modules/@testing-library/svelte/src/index.js:1
    ({"Object.<anonymous>":function(module,exports,require,__dirname,__filename,jest){import { act, cleanup } from './pure.js'
                                                                                      ^^^^^^
 
    SyntaxError: Cannot use import statement outside a module
 
      1 | import '@testing-library/jest-dom/extend-expect';
    > 2 | import {render, fireEvent, screen} from '@testing-library/svelte';
        | ^
      3 | import EnummerEditor from './EnummerEditor.svelte';
      4 |
      5 | describe('EnummerEditor', () => {
 
      at Runtime.createScriptFromCode (node_modules/jest-runtime/build/index.js:1505:14)
      at Object.require (src/EnummerEditor.spec.js:2:1)
 

任何想法或指向一些资源都会有帮助。

Answer 1

你找出问题所在了吗？