jest.config.ts

import type { Config } from '@jest/types';
import { pathsToModuleNameMapper } from 'ts-jest';

import { compilerOptions } from './tsconfig.json';

export default {
  moduleFileExtensions: ['js', 'json', 'ts'],
  testRegex: '.*\\.spec\\.ts$',
  transform: {
    '^.+\\.(t|j)s$': [
      '@swc/jest',
      {
        jsc: {
          parser: {
            syntax: 'typescript',
            tsx: false,
            decorators: true,
          },
          target: 'es2017',
          keepClassNames: true,
          transform: {
            legacyDecorator: true,
            decoratorMetadata: true,
          },
        },
        module: {
          type: 'es6',
          noInterop: false,
        },
      },
    ],
  },
  collectCoverageFrom: ['<rootDir>/src/**/*.(t|j)s'],
  coverageDirectory: 'coverage',
  testEnvironment: 'node',
  moduleNameMapper: pathsToModuleNameMapper(compilerOptions.paths, {
    prefix: '<rootDir>',
  }),
  preset: 'ts-jest',
} as Config.InitialOptions;