Angular 中的 Cypress 和 Cucumber > 流程未定义

Question

我尝试使用 Cypress 在 Angular 12 项目中使用 Cucumber 和 TypeScript 进行 e2e 测试。

Cypress 本身通过以下方式成功启动npx cypress open，并显示了我创建的功能文件：

当我开始测试此功能时，我收到以下错误：

我在这里发现了类似的问题，但没有可以应用的解决方案。我相信发生此错误是因为我使用的是 cypress 自己的浏览器，并且进程变量在那里不可用。我也查看了这个存储库，但未能找到任何可以解决此问题的内容。

该项目的package.json如下所示：

{   "name": "randomAppName",   "version": "0.0.0",   "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "watch": "ng build --watch --configuration development",
    "test": "ng test",
    "i18n": "ng extract-i18n --output-path src/assets/i18n",
    "lint": "eslint . --ext .ts,.js",
    "lint-fix": "eslint . --ext .ts,.js"   },   "private": true,   "dependencies": {
    "@angular/animations": "~12.2.0",
    "@angular/cdk": "^12.2.5",
    "@angular/common": "~12.2.0",
    "@angular/compiler": "~12.2.0",
    "@angular/core": "~12.2.0",
    "@angular/forms": "~12.2.0",
    "@angular/material": "^12.2.5",
    "@angular/platform-browser": "~12.2.0",
    "@angular/platform-browser-dynamic": "~12.2.0",
    "@angular/router": "~12.2.0",
    "@ngrx/effects": "^12.4.0",
    "@ngrx/store": "^12.4.0",
    "@ngrx/store-devtools": "^12.4.0",
    "moment": "^2.29.1",
    "ngrx-forms": "^6.3.5",
    "path-browserify": "^1.0.1",
    "rxjs": "~6.6.0",
    "tslib": "^2.3.0",
    "zone.js": "~0.11.4"   },   "cypress-cucumber-preprocessor": {
    "nonGlobalStepDefinitions": true   },   "devDependencies": {
    "@4tw/cypress-drag-drop": "^1.8.0",
    "@angular-devkit/build-angular": "~12.2.5",
    "@angular-eslint/builder": "12.7.0",
    "@angular-eslint/eslint-plugin": "12.7.0",
    "@angular-eslint/eslint-plugin-template": "12.7.0",
    "@angular-eslint/schematics": "12.7.0",
    "@angular-eslint/template-parser": "12.7.0",
    "@angular/cdk": "^12.0.1",
    "@angular/cli": "~12.2.5",
    "@angular/common": "^12.0.1",
    "@angular/compiler-cli": "~12.2.0",
    "@angular/core": "^12.0.1",
    "@angular/localize": "^12.2.5",
    "@cucumber/cucumber": "^7.2.1",
    "@cypress/browserify-preprocessor": "^3.0.1",
    "@cypress/webpack-preprocessor": "^5.9.0",
    "@jscutlery/cypress-harness": "^0.3.4",
    "@types/jasmine": "~3.8.0",
    "@types/node": "^12.11.1",
    "@typescript-eslint/eslint-plugin": "4.28.2",
    "@typescript-eslint/parser": "4.28.2",
    "cucumber": "^6.0.5",
    "cucumber-pretty": "^6.0.0",
    "cucumber-tsflow": "^4.0.0-rc.1",
    "cypress": "^8.4.0",
    "cypress-cucumber-preprocessor": "^4.3.1",
    "cypress-mouse-position": "^1.0.0",
    "cypress-pipe": "^2.0.0",
    "cypress-xpath": "^1.6.2",
    "eslint": "^7.26.0",
    "eslint-config-airbnb-base": "^14.2.1",
    "eslint-plugin-import": "^2.25.2",
    "jasmine-core": "~3.8.0",
    "jest": "^27.2.0",
    "karma": "~6.3.0",
    "karma-chrome-launcher": "~3.1.0",
    "karma-coverage": "~2.0.3",
    "karma-jasmine": "~4.0.0",
    "karma-jasmine-html-reporter": "~1.7.0",
    "prettier": "^2.5.1",
    "rxjs": "^6.6.7",
    "ts-loader": "^9.2.6",
    "ts-node": "^9.1.1",
    "tsify": "^4.0.1",
    "typescript": "~4.3.5",
    "webpack": "^5.65.0",
    "zone.js": "^0.11.4"   },   "browser": {
    "fs": false,
    "os": false,
    "path": false   } }

webpack.config.js 如下所示：

module.exports = {
  resolve: {
    modules: ["node_modules"],
    extensions: ["*", ".js", ".jsx", ".json"],
    symlinks: false,
    cacheWithContext: false,
    fallback: { path: require.resolve("path-browserify") },
  },
  node: {},
  module: {
    rules: [
      {
        test: /\.ts$/,
        exclude: /node_modules/,
        use: [
          {
            loader: "ts-loader",
          },
        ],
      },
      {
        test: /\.feature$/,
        use: [
          {
            loader: "cypress-cucumber-preprocessor/loader",
          },
        ],
      },
    ],
  },
};

请告诉我，如果需要任何其他信息，我很乐意提供。

Answer 1

process是undefined因为在您的情况下代码正在浏览器中执行。

您可能使用了与 webpack 4 一起使用的配置，该配置为path（您已经包含了后备）或在本例中提供了模拟 api process。 Webpack 5 发行说明：node.process 已删除

看起来黄瓜解析器实际上是通过将黄瓜代码发送到浏览器包来使用此加载器在浏览器上下文中执行的。

如果没有具体原因，我建议根本不要使用 webpack。您甚至不需要使用最新的 cyperss 版本来转换 typescript。相反，我建议使用cypress-cucumber-preprocessor 自述文件中建议的设置：

如果需要 webpack，你可以尝试模拟流程变量。support/index.js我验证了在将 webpack 5 与原始示例存储库一起使用时添加以下内容是否有效：

window.process = {
 argv: [],
 env: {},
};