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jest-haste-map: duplicate manual mock found when the duplicate is in the build folder

See original GitHub issue

I’m getting a warning from Jest for each manual mock I have, because it appears to be looking in the src directory and in the dist directory where I output my build.

I get the

jest-haste-map: duplicate manual mock found:
  Module name: index
  Duplicate Mock path: /Users/paul.cowan/projects/ds/payments/api/src/__mocks__/index.ts
This warning is caused by two manual mock files with the same file name.
Jest will use the mock file found in:
/Users/paul.cowan/projects/ds/payments/api/src/__mocks__/index.ts
 Please delete one of the following two files:
 /Users/paul.cowan/projects/ds/payments/api/dist/__mocks__/index.js
/Users/paul.cowan/projects/ds/payments/api/src/__mocks__/index.ts

I’ve tried mucking around with the exclude key in my tsconfig.json, but I can’t find a glob pattern that matches all mocks folders.

I.e. "exclude":["**/__mocks__/*"] but it still happens

    rootDir: process.cwd(),
    coverageDirectory: '<rootDir>/.coverage',
    collectCoverageFrom: [
      'src/**/*.{js,jsx,ts,tsx}',
      '!src/**/*.d.ts',
      '!src/**/*.test.*',
      '!src/test/**/*.*',
      '!src/features/**/*.*'
    ],
    setupFiles: ['@ds/common/scripts/tests/setupTests.js', '@ds/common/config/polyfills.js'],
    testMatch: [
      '<rootDir>/src/**/__tests__/**/*.ts?(x)',
      '<rootDir>/src/**/?(*.)(spec|test).ts?(x)',
      '<rootDir>/src/**/*.feature'
    ],
    testEnvironment: 'node',
    testURL: 'http://localhost',
    transform: {
      '^.+\\.(ts|tsx)$': '<rootDir>/../../node_modules/ts-jest/preprocessor.js',
      '^.+\\.feature$': 'gherkin-jest',
      '^.+\\.css$': '@ds/common/jest/cssTransform.js',
      '^.+\\.csv$': '@ds/common/jest/csvTransform.js',
      '^(?!.*\\.(js|jsx|css|json)$)': '@ds/common/jest/fileTransform.js'
    },
    transformIgnorePatterns: ['[/\\\\](node_modules)[/\\\\].+\\.(js|jsx)$'],
    moduleNameMapper: {
      '^react-native$': 'react-native-web'
    },
    moduleFileExtensions: ['web.js', 'js', 'json', 'web.jsx', 'jsx', 'ts', 'tsx', 'feature', 'csv']```

Issue Analytics

State:
Created 5 years ago
Reactions:2
Comments:14

Top GitHub Comments

33reactions

v-dakitcommented, May 6, 2019

In jest.config.js add this.

 roots: ['<rootDir>/src'],

15reactions

dagda1commented, Aug 13, 2018

@htbkoo for me the solution was quite easy as I’m using typescript, I just added the __mocks__ folder to the exclude list:

"exclude": ["**/__mocks__/*", "../../node_modules", "build", "src/**/*.test.ts", "src/**/*.test.tsx"]

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