Jest遇到意外的标记这通常意味着您正在尝试导入Jest无法解析的文件，例如,它不是普通的JavaScript

xggvc2p6 于 2023-08-01 发布在 Jest

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在结合D3、Jest和angular运行Jest测试用例时面临问题。
测试套件无法运行

Jest encountered an unexpected token

This usually means that you are trying to import a file which Jest cannot parse, e.g. it's not plain JavaScript.

By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules".

Here's what you can do:
 • If you are trying to use ECMAScript Modules, see https://jestjs.io/docs/en/ecmascript-modules for how to enable it.
 • 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/en/configuration.html

Details:

D:\Git\Sept-2021\repo\node_modules\d3-geo\node_modules\d3-array\src\index.js:1
({"Object.<anonymous>":function(module,exports,require,__dirname,__filename,global,jest){export {default as bisect, bisectRight, bisectLeft, bisectCenter} from "./bisect.js";
                                                                                         ^^^^^^

SyntaxError: Unexpected token 'export'

  at Runtime.createScriptFromCode (../../node_modules/jest-runtime/build/index.js:1350:14)
  at ../../node_modules/d3-geo/dist/d3-geo.js:3:81
  at Object.<anonymous> (../../node_modules/d3-geo/dist/d3-geo.js:6:2)

字符串
请建议使用Jest和AnguarJS的D3配置。

jestjs

来源：https://stackoverflow.com/questions/69083940/jest-encountered-an-unexpected-token-this-usually-means-that-you-are-trying-to-i

1条答案

按热度按时间

0pizxfdo1#

在我的jest.config.js文件中添加以下内容解决了使用d3模块时的问题：

{
// An array of regexp pattern strings that are matched against all source file paths, matched files will skip transformation
  transformIgnorePatterns: [
    '/node_modules/(?!d3-(array|format))'
  ]
}

字符串
所以我猜向ignore模式数组添加d3-geo模块应该可以解决这个问题

{
// An array of regexp pattern strings that are matched against all source file paths, matched files will skip transformation
  transformIgnorePatterns: [
    '/node_modules/(?!d3-(array|format|geo))'
  ]
}

型

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Jest遇到意外的标记这通常意味着您正在尝试导入Jest无法解析的文件，例如,它不是普通的JavaScript

1条答案

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