Jest: transformIgnorePatterns not working

[brendonco]

🐛 Bug Report

private scope in node_modules for transformIgnorePatterns whitelist not working.

To Reproduce

1. Private scope node_modueles/@company/library-name/src/assets/theme/default-theme

  export const theme = {
      fonts: {
         name: 'Sans Regular',
      }
  }

1. in test

import { theme } from '@company/library-name/src/assets/theme/default-theme';

error:
 ({"Object.<anonymous>":function(module,exports,require,__dirname,__filename,global,jest){export const theme = {

1. Jest config

module.export = {
  testMatch: ['<rootDir>/src/**/>(*.)test.{js, jsx}'], // finds test
   "moduleFileExtensions": [
      "js",
      "jsx"
    ],
    "moduleDirectories": [
      "node_modules",
      "testing"
    ],
    "coverageThreshold": {
      "global": {
        "branches": 0,
        "functions": 0,
        "lines": 0,
        "statements": 0
      }
    },
    "coverageReporters": [
      "json-summary",
      "cobertura",
      "html"
    ],
    "reporters": [
      "default",
      "jest-junit"
    ],
    "testPathIgnorePatterns": [
      "<rootDir>/src/common/assets/",
      "/public/"
    ],
    "transformIgnorePatterns": [
      "<rootDir>/node_modules/(?!@company/)"
    ],
    "collectCoverageFrom": [
      "<rootDir>/src/**/*.js",
      "!**/index.js",
      "!**/App.js",
      "!**/node_modules/**",
      "!**/specs/**",
      "!<rootDir>/src/store/**",
      "!<rootDir>/src/reducer/**",
      "!<rootDir>/src/common/assets/**"
    ],
    "coverageDirectory": "test/reports/coverage",
    "moduleNameMapper": {
      "\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$": "<rootDir>/testing/__mocks__/fileMock.js",
      "\\.(css|less)$": "<rootDir>/testing/__mocks__/styleMock.js"
    },
  setupFilesAfterEnv: [
    '@testing-library/jest-dom/extend-expect', 
    '@testing-library/react/cleanup-after-each'
  ] // setupFiles before the tests are ran
};

envinfo

 System:
    OS: Windows 10 10.0.17763
    CPU: (4) x64 Intel(R) Core(TM) i5-7300U CPU @ 2.60GHz
  Binaries:
    Node: 12.13.1 - ~\SoftwaresInstalled\node-v12.13.1-win-x64\node.EXE
    Yarn: 1.9.4 - ~\AppData\Roaming\npm\yarn.CMD
    npm: 6.12.1 - ~\SoftwaresInstalled\node-v12.13.1-win-x64\npm.CMD
  npmPackages:
    jest: ^25.3.0 => 25.3.0

[brendonco]

Not an issue. Jest config issue on exporting.

[mng12689]

hi could you please explain why this is not an issue? jest does not seem to be transpiling any of the packages under our private scope using the definition below, which i believe should work?

"transformIgnorePatterns": [
      "[/\\\\]node_modules[/\\\\].+\\.(js|jsx|ts|tsx)$",
      "^.+\\.module\\.(css|sass|scss)$",
      "<rootDir>/node_modules/(?!@my-company/)"
    ],

[amclin]

@mng12689 if you are currently using .babelrc try changing it to a babel.config.js instead. I discovered that the transformIgnorePatterns setting seems to be completely ignored when using a .babelrc: #10256