jest.config.js

const { resolve } = require('path')
const { pathsToModuleNameMapper } = require('ts-jest')
const CI = !!process.env.CI

const ROOT_DIR = __dirname
const TSCONFIG = resolve(ROOT_DIR, 'tsconfig.json')
const tsconfig = require(TSCONFIG)

module.exports = {
  testEnvironment: 'node',
  rootDir: ROOT_DIR,
  restoreMocks: true,
  reporters: ['default'],
  modulePathIgnorePatterns: ['dist', 'test-assets', 'test-files', 'fixtures', '.bob'],
  testPathIgnorePatterns: ['/node_modules/', '/dist/', '.bob/'],
  moduleNameMapper: pathsToModuleNameMapper(tsconfig.compilerOptions.paths, { prefix: `${ROOT_DIR}/` }),
  collectCoverage: false,
  cacheDirectory: resolve(ROOT_DIR, `${CI ? '' : 'node_modules/'}.cache/jest`),
  transform: {
    '^.+\\.mjs?$': 'babel-jest',
    '^.+\\.ts?$': 'babel-jest',
    '^.+\\.js$': 'babel-jest',
  },
  resolver: 'bob-the-bundler/jest-resolver.js',
}