jest.config.js

module.exports = {
  transform: {
    "^.+\\.[jt]sx?$": `<rootDir>/jest/jest-preprocess.js`,
  },
  moduleNameMapper: {
    ".+\\.(css|styl|less|sass|scss)$": `identity-obj-proxy`,
    ".+\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$": `<rootDir>/__mocks__/file-mock.js`,
    // Needed to work around issue with module imports between Jest and Gatsby
    // https://github.com/gatsbyjs/gatsby/discussions/34803#discussioncomment-2408817
    "^gatsby-core-utils/(.*)$": `gatsby-core-utils/dist/$1`, // Workaround for https://github.com/facebook/jest/issues/9771
    "^gatsby-page-utils/(.*)$": `gatsby-page-utils/dist/$1`, // Workaround for https://github.com/facebook/jest/issues/9771
  },
  testPathIgnorePatterns: [`node_modules`, `\\.cache`, `<rootDir>.*/public`],
  transformIgnorePatterns: [
    `node_modules/(?!(gatsby|gatsby-script|gatsby-link)/)`,
  ],
  globals: {
    __PATH_PREFIX__: ``,
  },
  setupFiles: [`<rootDir>/jest/loadershim.js`],
};