JavaScript - jest-haste-map : Haste module naming collision: {{name}}

Question

运行 npm run test 时出现以下错误:

jest-haste-map: Haste module naming collision: {{name}}
  The following files share their name; please adjust your hasteImpl:
    * <rootDir>/packages/some-package/templates/js/package.json
    * <rootDir>/packages/some-package/templates/ts/package.json

我的 jest.config好像

module.exports = {
  collectCoverage: true,
  setupFiles: ['<rootDir>/jest.setup.js'],
  preset: 'ts-jest',
  testEnvironment: 'jsdom',
  collectCoverageFrom: [
    '<rootDir>/packages/**/__tests__/**/*.ts',
    '!<rootDir>/packages/**/templates/**/*.ts',
  ],
  testMatch: [
    '<rootDir>/packages/**/*.test.ts'
  ],
  transform: {
    '^.+\\.js?$': '<rootDir>/node_modules/babel-jest'
  },
  testPathIgnorePatterns: [
    '/node_modules/',
  ],
  coveragePathIgnorePatterns: [
    '/node_modules/',
  ],
  projects: [
    '<rootDir>/packages/*/jest.config.js'
  ]
};

不确定警告是什么，以及如何解决。

Answer 1

我收到此警告是因为 package.json存在于我的根目录和我的build目录。通过指定我只希望 Jest 在 src 中查找测试，我能够摆脱它。通过将以下内容添加到我的 package.json 中:

  "jest": {
    "roots": ["src"]
  }