Как настроить Jest с Babel

Как настроить Jest с Babel

Я настраиваю простой проект для тестирования с использованием jest и babel. Как мне заставить их работать вместе?

Я пробовал инструкции, упомянутые здесь: https://jestjs.io/docs/en/getting-started, но не смог этого сделать.


 import {PI} from "./mathconsts"; describe("tests",()={amp}gt;{ test('assert pi', () ={amp}gt; { expect(PI).toBe(3.14); }); }); 


 export const PI = 3.14; 


 { "name": "simple-testing", "version": "1.0.0", "description": "Project to write simple tests", "main": "index.js", "scripts": { "test": "jest" }, "dependencies": { "axios": "0.19.0", "dotenv": "8.1.0" }, "devDependencies": { "@babel/core": "^7.6.4", "@babel/preset-env": "^7.6.3", "babel-jest": "^24.9.0", "jest": "24.9.0", "prettier": "1.18.2" } } 


 module.exports = { presets: [ [ '@babel/preset-env', { targets: { node: 'current', }, }, ], ], }; 


 module.exports = { transformIgnorePatterns: [ "/node_modules/" ], } 

обнаружена ошибка:

  ● Test suite failed to run Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, eg 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: • 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 (eg 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: /Users/tests/abc.test.js:1 ({"Object.{amp}lt;anonymous{amp}gt;":function(module,exports,require,__dirname,__filename,global,jest){import { PI } from "./mathconsts"; ^ SyntaxError: Unexpected token { at ScriptTransformer._transformAndBuildScript (node_modules/@jest/transform/build/ScriptTransformer.js:537:17) at ScriptTransformer.transform (node_modules/@jest/transform/build/ScriptTransformer.js:579:25) 

Как мне заставить его работать?

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