jest.config.js

module.exports = {
  testEnvironment: "jsdom",
  setupFilesAfterEnv: ["<rootDir>/tests/setup-test-env.js"],
  transform: {
    "\\.(ts|js)x?$": `<rootDir>/tests/jest-preprocess.js`,
  },
  moduleNameMapper: {
    ".+\\.(css|styl|less|sass|scss)$": `identity-obj-proxy`,
    ".+\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$": `<rootDir>/tests/__mocks__/file-mock.js`,
    "^d3-(interpolate|scale-chromatic|color)$": `<rootDir>/node_modules/d3-$1/dist/d3-$1.min.js`,
  },
  testPathIgnorePatterns: [`node_modules`, `\\.cache`, `<rootDir>.*/public`],
  transformIgnorePatterns: [`node_modules/(?!(gatsby|gatsby-script|gatsby-link|@lekoarts|@mdx-js)/)`],
  globals: {
    __PATH_PREFIX__: ``,
  },
  testEnvironmentOptions: {
    url: `http://localhost`,
  },
  setupFiles: [`<rootDir>/tests/loadershim.js`],
  collectCoverage: true,
  collectCoverageFrom: ["./src/**"],
  coverageThreshold: {
    global: { branches: 80, functions: 80, lines: 80, statements: -10 },
  },
};