由于模块js文件中的“导入”,ts-jest无法运行tsx测试文件

Red*_*ant 2 javascript typescript reactjs jestjs ts-jest

我试图用来ts-jest运行tsx测试文件form.spec.tsx

form.spec.tsx进口React Quill编辑器和一些插件。

我如何绕过SyntaxError: Unexpected identifier来自导入的名为quill-mention的插件的错误Quill?该模块涉及form.spec.tsx

我已经["<rootDir>/node_modules/"]在笑话配置中添加到transformIgnorePatterns字段,但是/node_modules/quill-mention/src/quill.mention.js中仍然存在此问题

  ? Test suite failed to run

    /home/web/node_modules/quill-mention/src/quill.mention.js:1
    ({"Object.<anonymous>":function(module,exports,require,__dirname,__filename,global,jest){import Quill from 'quill';
                                                                                                    ^^^^^

    SyntaxError: Unexpected identifier

      1 | import React from "react"
    > 2 | import "quill-mention";
        | ^
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form.spec.tsx:

import {render, RenderResult, waitForElement} from "react-testing-library";
import ReactQuill, {Quill} from 'react-quill';
import "quill-mention";

const renderResult = render(
        <ReactQuill
            modules={
             {
                mention: {
                   allowedChars: /^[A-Za-z\sÅÄÖåäö]*$/,
                   mentionDenotationChars: ["@", "#"],
                },
            }
        />
);

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package.json

  "jest": {
    "transform": {
      "^.+\\.tsx?$": "ts-jest"
    },
    "globals": {
      "ts-jest": {
        "tsConfig": "tsconfig.jest.json"
      },
      "window": {}
    },
    "testRegex": "(/watch/web/__tests__/.*|(\\.|/)(test|spec))\\.(jsxxxx?|tsx?)$",
    "moduleFileExtensions": [
      "ts",
      "tsx",
      "js",
      "jsx",
      "json",
      "node"
    ],
    "modulePaths": [
      "<rootDir>"
    ],
    "moduleNameMapper": {
      ".+\\.(css|styl|less|sass|scss)$": "identity-obj-proxy",
      ".+\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$": "<rootDir>/__mocks__/FileMock.js"
    },
    "transformIgnorePatterns": [
      "<rootDir>/node_modules/"
    ]
  }
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tsconfig.jest.json:

{
  "compilerOptions": {
    "jsx": "react",
    "module": "commonjs",
    "target": "es6",
    "moduleResolution": "node",
    "removeComments": true,
    "allowSyntheticDefaultImports": true,
    "noImplicitAny": false,
    "experimentalDecorators": true,
    "noLib": false,
    "declaration": false,
    "emitDecoratorMetadata": true,
    "lib": ["es6", "dom"],
    "types": ["jest","reflect-metadata"],
    "inlineSources":true,
    "skipLibCheck": true,
    "esModuleInterop": true
  },
  "exclude": [
    "node_modules"
  ]
}
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有人说allowJs: true可以修复它,但是不起作用。我所有的测试都失败了JavaScript heap out of memory

Tod*_*fee 5

问题在于Jest 没有转换该文件。并且在普通JS中import是无效的。您需要配置Jest,以便它将转换该文件。

首先,将更transform改为还处理带有扩展名js或的文件jsx(除了ts文件:)

"jest": {
  "transform": {
    "^.+\\.(ts|js)x?$": "ts-jest"
  },
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接下来,您需要将目录列入白名单,以便Jest对其进行转换。这将跳过转换node_modules quill-mention目录之外的所有文件。

    "transformIgnorePatterns": [
      "<rootDir>/node_modules/(?!(quill-mention)/)"
    ]
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这应该克服了的问题quill-mention。现在它应该失败ReferenceError: MutationObserver is not defined,这是另一个问题,与它使用的Jest的JSm环境有关。您可以在此处阅读有关如何解决该问题的信息:

用Jest测试MutationObserver

您可能还需要考虑移至babel-jest+ @babel/preset-typescript而不是使用ts-jest