运行Jest测试时未定义`regeneratorRuntime` [英] `regeneratorRuntime` is not defined when running Jest test

问题描述

标题几乎可以解释我所面临的问题.我正在尝试测试具有某种状态的React组件，并且尝试为该组件提供存储以获取所需的内容.当我使用Jest运行组件的测试时，出现以下错误:

The title pretty much explains what I'm facing. I'm trying to test a React component that has some state, and I attempt to provide my store to the component in order to get what it needs. When I run the test of the component using Jest, I get the following error:

ReferenceError: regeneratorRuntime is not defined

通过一些阅读，我确定这是由babel-polyfill或regenerator-runtime未能正确应用于Jest引起的.但是，我尝试安装这两个软件包并重新运行，但结果没有变化.阅读Jest Github问题页面后(删除自动包含babel-polyfill#2755 的内容) ，我发现Jest从版本19起不会自动包含babel-polyfill.我对该软件包的手动安装应该已经解决了该问题，但是没有解决.我包括了一些我认为相关的文件

I've determined through some reading that this is caused by babel-polyfill or regenerator-runtime not being applied correctly to Jest. However, I've tried installing both of those packages and re-running with no change in results. After reading the Jest Github issues page (Remove auto-inclusion of babel-polyfill #2755), I found out that babel-polyfill is not included automatically by Jest as of version 19. My manual installation of that package should have fixed the issue, but it did not. I've included some of the files that I think are relevant

.babelrc:

{
  "presets": ["es2015", "react", "stage-2"],
  "env": {
    "development": {
      "plugins": [
        ["react-transform", {
          "transforms": [{
            "transform": "react-transform-hmr",
            "imports": ["react"],
            "locals": ["module"]
          }]
        }]
      ]
    }
  }
}

jest.config:

{
    "transform": {
        "^.+\\.(js|jsx)$": "<rootDir>/node_modules/webpack-babel-jest",
        ".*\\.(vue)$": "<rootDir>/node_modules/jest-vue-preprocessor",
        ".*": "babel-jest"
    },
    "moduleNameMapper": {
        "\\.(jpg|jpeg|css|scss|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$": "<rootDir>/__tests__/__mocks__/fileMock.js",
        ".*\\.(vue)$": "vue/dist/vue.js"
    },
    "testPathIgnorePatterns": ["type_parser.spec.js", 
                               "<rootDir>/__tests__/__mocks__/",
                               "__tests__/unit/core/util/type_parser.js",
                               "__tests__/GitlabLoader.test.js"
                               ]
}

package.json:

{
  "name": "my_project",
  "version": "0.2.0",
  "description": "My Project",
  "scripts": {
    "clean:build": "node ./bin/clean.js createdir",
    "build:html": "node ./bin/buildHtml.js",
    "deployProduction": "node ./bin/deployProduction.js",
    "start": "webpack-dev-server --config ./config/webpack.config.dev.js --hot --inline --progress",
    "serve": "npm run deployProduction&& supervisor --watch ./production-copy src/js/server",
    "prebuild": "npm run clean:build",
    "postbuild": "node ./bin/postBuild.js",
    "rebuild-win": "set BUILD_TYPE=preview& npm run prebuild & npm run build-win & npm run serve",
    "build": "set BUILD_TYPE=final& npm run prebuild & npm run build-win",
    "deploy": "npm run build & npm run serve",
    "build-win": "set NODE_ENV=production & npm run element-build & npm run build-doc & npm run build:html &  webpack -p --config ./config/webpack.config.prod.js --json > webpack.log.json & npm run postbuild",
    "lint": "eslint config src/js/**/*.js",
    "jscs": "jscs src/js/",
    "test": "jest --no-cache --verbose --config=./__tests__/jest.config",
    "test:watch": "npm run test -- --watch",
    "element-init": "node node_modules/element-theme/bin/element-theme -i src/js/core/ui/element-theme.css",
    "element-build": "node node_modules/element-theme/bin/element-theme -c src/js/core/ui/element-theme.css -o src/js/core/ui/element-theme ",
    "build-doc": "node bin/buildDoc.js ",
    "storybook": "start-storybook -p 9001 -c .storybook"
  },
  "repository": {
    "type": "git",
    "url": "my_url"
  },
  "license": "MIT",
  "bugs": {
    "url": "my_url"
  },
  "homepage": "my_homepage",
  "dependencies": {
    "autoprefixer": "^6.3.6",
    "axios": "^0.11.1",
    "babel-runtime": "^6.23.0",
    "babel-standalone": "^6.10.3",
    "bluebird": "^3.4.0",
    "brace": "^0.8.0",
    "browserify": "^13.0.1",
    "chai": "^3.5.0",
    "classnames": "2.2.3",
    "cls-bluebird": "^1.0.1",
    "codemirror": "^5.16.0",
    "connect-history-api-fallback": "^1.3.0",
    "continuation-local-storage": "^3.1.7",
    "dateformat": "^1.0.12",
    "diff": "^3.0.1",
    "element-theme": "^0.4.0",
    "element-ui": "^1.1.5",
    "express-history-api-fallback": "^2.0.0",
    "filedrop": "^2.0.0",
    "fs-extra": "^0.30.0",
    "history": "^2.0.2",
    "humps": "^1.0.0",
    "immutability-helper": "^2.1.1",
    "isomorphic-fetch": "^2.2.1",
    "json-loader": "^0.5.4",
    "jszip": "^3.0.0",
    "jszip-utils": "0.0.2",
    "material-ui": "^0.16.7",
    "materialize-css": "^0.97.6",
    "mocha": "^2.5.3",
    "moment": "^2.17.1",
    "normalizr": "^1.0.0",
    "raven-js": "^3.9.1",
    "react": "^15.0.1",
    "react-ace": "^3.5.0",
    "react-addons-update": "^15.4.2",
    "react-dom": "^15.0.1",
    "react-redux": "^4.4.5",
    "react-router": "^2.3.0",
    "react-router-redux": "^4.0.2",
    "redux": "^3.4.0",
    "redux-logger": "^2.6.1",
    "redux-saga": "^0.9.5",
    "request": "^2.72.0",
    "request-promise": "^3.0.0",
    "reselect": "^2.5.4",
    "save-as": "^0.1.7",
    "showdown": "^1.4.2",
    "three": "^0.79.0",
    "url-pattern": "^1.0.3",
    "vue": "^2.0.5",
    "vue-easy-slider": "^1.4.0",
    "vue-loader": "^9.8.1",
    "vue-router": "^2.0.1",
    "vue-slider-component": "^2.0.4",
    "walk": "^2.3.9"
  },
  "devDependencies": {
    "@kadira/storybook": "^2.35.3",
    "babel-core": "^6.7.6",
    "babel-eslint": "^6.1.0",
    "babel-jest": "^18.0.0",
    "babel-loader": "^6.0.2",
    "babel-plugin-react-transform": "^2.0.2",
    "babel-polyfill": "^6.23.0",
    "babel-preset-es2015": "^6.22.0",
    "babel-preset-es2016": "^6.22.0",
    "babel-preset-react": "^6.23.0",
    "babel-preset-stage-2": "^6.5.0",
    "babel-register": "^6.7.2",
    "chai": "3.5.0",
    "chai-jquery": "2.0.0",
    "cheerio": "0.20.0",
    "colors": "1.1.2",
    "concurrently": "^2.0.0",
    "copy-webpack-plugin": "2.1.1",
    "css-loader": "0.23.1",
    "element-theme-default": "^1.1.5",
    "enzyme": "^2.7.1",
    "eslint": "^2.13.1",
    "eslint-config-airbnb": "^9.0.1",
    "eslint-plugin-import": "^2.2.0",
    "eslint-plugin-jsx-a11y": "^4.0.0",
    "eslint-plugin-react": "^5.2.2",
    "express": "^4.13.4",
    "extract-text-webpack-plugin": "1.0.1",
    "file-loader": "0.8.5",
    "identity-obj-proxy": "^3.0.0",
    "jest": "^19.0.2",
    "jest-cli": "^18.1.0",
    "jest-css-modules": "^1.1.0",
    "jest-enzyme": "^2.1.2",
    "jest-vue-preprocessor": "^0.1.2",
    "jquery": "2.2.3",
    "jscs": "3.0.3",
    "jsdoc-to-markdown": "^2.0.0",
    "jsdom": "8.4.0",
    "json-loader": "^0.5.4",
    "mocha": "^2.4.5",
    "ncp": "^2.0.0",
    "node-sass": "3.7.0",
    "postcss-loader": "0.8.2",
    "react-addons-test-utils": "^15.4.2",
    "react-hot-loader": "1.3.0",
    "react-test-renderer": "^15.4.2",
    "react-transform-hmr": "^1.0.4",
    "redux-devtools": "^3.3.1",
    "redux-devtools-dock-monitor": "^1.1.1",
    "redux-devtools-log-monitor": "^1.0.11",
    "regenerator-runtime": "^0.10.3",
    "remotedev": "^0.1.2",
    "rimraf": "^2.5.2",
    "sass-loader": "3.2.0",
    "storybook-addon-material-ui": "^0.7.6",
    "style-loader": "0.13.1",
    "url-loader": "0.5.7",
    "vueify": "^9.4.0",
    "webpack": "^1.13.0",
    "webpack-babel-jest": "^1.0.4",
    "webpack-dev-middleware": "^1.6.1",
    "webpack-dev-server": "^1.16.3",
    "webpack-hot-middleware": "^2.10.0"
  }
}

推荐答案

我使用了import "babel-polyfill"，它解决了我的问题

I used import "babel-polyfill" and it solved my problem

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