jest.config.js

const { compilerOptions } = require("./tsconfig.json")
const { pathsToModuleNameMapper } = require("ts-jest/utils")
const paths = pathsToModuleNameMapper(compilerOptions.paths, {
    prefix: "<rootDir>/",
})

process.env.TZ = 'UTC';

module.exports = {
    transform: {
        "^.+\\.[jt]sx?$": "<rootDir>/jest-preprocess.js",
    },
    moduleNameMapper: {
        ".+\\.(css|styl|less|sass|scss)$": `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`,
        ...paths,
    },
    testPathIgnorePatterns: [`node_modules`, `\\.cache`, `<rootDir>.*/public`],
    transformIgnorePatterns: [`node_modules/(?!(gatsby)/)`],
    globals: {
        __PATH_PREFIX__: ``,
    },
    testEnvironment: 'jsdom',
    testURL: `http://localhost`,
    setupFiles: [`<rootDir>/loadershim.js`],
    moduleDirectories: ['node_modules', 'src'],
    roots: [
        '<rootDir>/src'
    ],
    resetMocks: true,
    setupFilesAfterEnv: ['<rootDir>/jest-setup.js'],
}