对打字稿文件语法错误的开玩笑测试：“接口是严格模式下的保留字”

Posted 2023-02-22

【中文标题】对打字稿文件语法错误的开玩笑测试：“接口是严格模式下的保留字”

【英文标题】：Jest test on typescript file syntax error: "interface is a reserved word in strict mode"

【发布时间】：2019-06-17 12:41:14

【问题描述】：

我的分支： https://github.com/Futuratum/moonholdings.io/tree/JestTests

当前公关： https://github.com/Futuratum/moonholdings.io/pull/29

我的 Astronaut.tsx 组件

import React from 'react';

import  moonHoldings  from '../../shared/models';
import  astronaut  from '../../styles';

const  AstronautContainer, Heading  = astronaut;

interface LogoCheck 
  showLogo: boolean;


export default (showLogo: LogoCheck) =>  (
  <AstronautContainer>
     showLogo.showLogo === true ? <Heading>moonHoldings</Heading> : null 
    <img src="static/astronaut.png"  />
  </AstronautContainer>
);

简单测试：

import React from 'react';
import  shallow  from 'enzyme';
import toJson from 'enzyme-to-json';

import Astronaut from '../components/Astronaut/Astronaut.tsx';

describe('<Astronaut /> component', () => 
  console.log('Astronaut', Astronaut);
  describe('when rendering', () => 
    const wrapper = shallow(<Astronaut showLogo=true />);

    it('should render a component matching the snapshot', () => 
      const tree = toJson(wrapper);
      expect(tree).toMatchSnapshot();
      expect(wrapper).toHaveLength(1);
    );
  );
);

SyntaxError: /Users/leongaban/projects/Futuratum/moonholdings.io/components/Astronaut/Astronaut.tsx: interfaceis a reserved word in strict mode (8:0)

我尝试在我的 tsconfig 的 compilerOptions 中将 strict 更改为 false，但这没有帮助。

还有其他人使用 Jest 测试和 Typescript 遇到过这种情况吗？

---

package.json

  "name": "moonholdings.io",
  "version": "2.0.0",
  "description": "Moonholdings.io",
  "main": "index.ts",
  "scripts": 
    "dev": "next -p 7777",
    "build": "next build",
    "start": "next start -p 8000",
    "test": "NODE_ENV=test jest --watch",
    "test-win": "SET NODE_ENV=test&& jest --watch",
    "heroku-postbuild": "next build"
  ,
  "author": "Futuratum",
  "license": "ISC",
  "dependencies": 
    "@zeit/next-sass": "^1.0.1",
    "@zeit/next-typescript": "^1.1.1",
    "apollo-boost": "^0.1.16",
    "apollo-client": "^2.4.2",
    "decko": "^1.2.0",
    "downshift": "^2.2.3",
    "enzyme": "^3.6.0",
    "enzyme-adapter-react-16": "^1.5.0",
    "graphql": "^14.0.2",
    "graphql-tag": "^2.9.2",
    "graphql-tools": "^4.0.0",
    "lodash.debounce": "^4.0.8",
    "next": "^7.0.2",
    "next-with-apollo": "^3.1.3",
    "node-sass": "^4.11.0",
    "nprogress": "^0.2.0",
    "prop-types": "^15.6.2",
    "react": "^16.7.0",
    "react-adopt": "^0.6.0",
    "react-apollo": "^2.2.1",
    "react-dom": "^16.7.0",
    "react-transition-group": "^2.5.0",
    "styled-components": "^3.4.9",
    "tslint": "^5.12.1",
    "tslint-react": "^3.6.0",
    "typescript": "^3.2.4",
    "waait": "^1.0.2"
  ,
  "devDependencies": 
    "@babel/plugin-proposal-decorators": "^7.3.0",
    "@babel/preset-typescript": "^7.1.0",
    "@types/enzyme": "^3.1.15",
    "@types/jest": "^23.3.13",
    "@types/next": "^7.0.6",
    "@types/react": "^16.7.20",
    "@types/react-dom": "^16.0.11",
    "@types/react-redux": "^7.0.0",
    "@types/zeit__next-typescript": "^0.1.1",
    "babel-core": "^7.0.0-bridge.0",
    "babel-jest": "^23.6.0",
    "babel-plugin-styled-components": "^1.7.1",
    "casual": "^1.5.19",
    "enzyme-to-json": "^3.3.4",
    "jest": "^23.6.0",
    "jest-transform-graphql": "^2.1.0"
  ,
  "jest": 
    "setupTestFrameworkScriptFile": "<rootDir>/jest.setup.js",
    "testPathIgnorePatterns": [
      "<rootDir>/.next/",
      "<rootDir>/node_modules/"
    ],
    "transform": 
      "\\.(gql|graphql)$": "jest-transform-graphql",
      ".*": "babel-jest",
      "^.+\\.js?$": "babel-jest"
    
  

我的 .babelrc 文件

  "env": 
    "development": 
      "presets": [
        "next/babel",
        "@zeit/next-typescript/babel"
      ],
      "plugins": [
        [
          "styled-components",
          
            "s-s-r": true,
            "displayName": true
          
        ],
        [
          "@babel/plugin-proposal-decorators",
          
            "legacy": true
          
        ]
      ]
    ,
    "production": 
      "presets": [
        "next/babel",
        "@zeit/next-typescript/babel"
      ],
      "plugins": [
        [
          "styled-components",
          
            "s-s-r": true,
            "displayName": true
          
        ],
        [
          "@babel/plugin-proposal-decorators",
          
            "legacy": true
          
        ]
      ]
    ,
    "test": 
      "presets": [
        [
          "next/babel",
          
            "preset-env": 
              "modules": "commonjs"
            
          
        ]
      ],
      "plugins": [
        [
          "styled-components",
          
            "s-s-r": true,
            "displayName": true
          
        ]
      ]
    
  

【问题讨论】：

好像你的打字稿没有编译。你用 ts-jest 吗？

我已经安装了那个打包的，但是你如何使用它@Stramski

我的 package.json 中有以下 sn-p => "jest": "globals": "ts-jest": "tsConfig": "tsconfig_renderer.json" , “moduleFileExtensions”：[“ts”，“tsx”，“js”，“jsx”]，“roots”：[“/test”]，“setupFiles”：[“/test/test- setup/test-setup.ts" ], "transform": ".(ts|tsx)": "ts-jest" , "testRegex": "(/test/.*)(.test.ts|.test.tsx|.test.js)$" ,

@Stramski 好的，我尝试添加您的转换和 testRegex 行，但现在找不到任何测试。 No tests found.

因为我的正则表达式与您的测试不匹配；）

【参考方案1】：

好的，在我将此@babel/preset-typescript 添加到我的预设中后，该错误就消失了：

"test": 
  "presets": [
    "@babel/preset-typescript",  // <---
    [
      "next/babel",
      
        "preset-env": 
          "modules": "commonjs"
        
      
    ]
  ],
  "plugins": [
    [
      "styled-components",
      
        "s-s-r": true,
        "displayName": true
      
    ]
  ]

【参考方案2】：

如果只有 @babel/typescript 预设不起作用。 您可以尝试以下方法：

将失败的测试文件重命名为 .ts 或 .tsx，具体取决于您的测试中是否包含 JSX（在本例中为 Astronaut.test.tsx） 更新您的 jest 配置 docs（在本例中为 package.json），添加

"moduleFileExtensions": [
    "js",
    "ts",
    "tsx"
],

【参考方案3】：

你的 const 声明没有变量名。 常量变量名：类型 = 新类型（） 要么 常量变量名：类型； 要么 const 变量名 = 新类型；

【讨论】：

你是说这条线？ const AstronautContainer, Heading = astronaut; 我正在从 astronaut 样式文件中解构这两个变量名。