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)

process.env.LC_ALL = 'en_US'

module.exports = {
  testEnvironment: 'node',
  rootDir: ROOT_DIR,
  restoreMocks: true,
  reporters: ['default'],
  modulePathIgnorePatterns: ['dist', '.bob'],
  moduleNameMapper: pathsToModuleNameMapper(tsconfig.compilerOptions.paths, { prefix: `${ROOT_DIR}/` }),
  collectCoverage: true,
  cacheDirectory: resolve(ROOT_DIR, `${CI ? '' : 'node_modules/'}.cache/jest`),
  extensionsToTreatAsEsm: ['.ts'],
  coverageThreshold: {
    global: {
      branches: 80,
      functions: 80,
      lines: 80,
      statements: 80,
    },
  },
  resolver: 'bob-the-bundler/jest-resolver',
}