jest.config.js

import { pathsToModuleNameMapper } from 'ts-jest';
import tsConfig from './tsconfig.json' with { type: 'json' };
export default {
  testTimeout: 15000,
  transform: {
    '\\.ts$': [
      'ts-jest',
      {
        useESM: true,
      },
    ],
  },
  preset: 'ts-jest',
  verbose: true,
  extensionsToTreatAsEsm: ['.ts'],
  moduleNameMapper: {
    ...(tsConfig.compilerOptions.paths &&
      pathsToModuleNameMapper(tsConfig.compilerOptions.paths, {
        prefix: '<rootDir>/',
      })),
    // Jest-resolve doesn't know that Node wants .js extensions in imports
    '^(\\.{1,2}/.*)\\.js$': '$1',
  },
  modulePathIgnorePatterns: ['<rootDir>/dist/'],
  setupFiles: ['dotenv/config'],
  globalSetup: '<rootDir>/api/test/postgres.setup.mjs',
  globalTeardown: '<rootDir>/api/test/postgres.teardown.mjs',
};