npm i -D jest @vue/test-utils @vue/vue3-jest jest-environment-jsdom @types/jest identity-obj-proxy
npm i -D babel-jest @babel/core @babel/preset-env

在项目的根目录下创建 babel.config.js ，通过配置 Babel 使其能够兼容当前的 Node 版本。

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

module.exports = {
  clearMocks: true,
  testEnvironment: "jsdom",
  transform: {
    "^.+\\.vue$": "@vue/vue3-jest",
    "^.+\\.{js|jsx|ts|tsx}$": "babel-jest"
  },
  transformIgnorePatterns: [
    '/node_modules/',
  ],
  moduleNameMapper: {
    "//.(css|less|scss|sass)$": "identity-obj-proxy"
  }
}

package.json

// package.json
{
  "scripts": {
    "test": "jest"
  }
}