workspace/projects/trading-platform/apps/backend/jest.config.ts

import type { Config } from 'jest';

const config: Config = {
  preset: 'ts-jest',
  testEnvironment: 'node',
  roots: ['<rootDir>/src'],
  testMatch: [
    '**/__tests__/**/*.test.ts',
    '**/__tests__/**/*.spec.ts',
    '**/?(*.)+(spec|test).ts'
  ],
  testPathIgnorePatterns: [
    '/node_modules/',
    '/__tests__/mocks/',
    '/__tests__/setup.ts'
  ],
  moduleFileExtensions: ['ts', 'js', 'json'],
  collectCoverageFrom: [
    'src/**/*.ts',
    '!src/**/*.d.ts',
    '!src/**/*.spec.ts',
    '!src/**/*.test.ts',
    '!src/**/index.ts'
  ],
  coverageDirectory: 'coverage',
  coverageReporters: ['text', 'lcov', 'html'],
  verbose: true,
  moduleNameMapper: {
    '^@/(.*)$': '<rootDir>/src/$1'
  },
  transform: {
    '^.+\\.ts$': ['ts-jest', {}]
  },
  setupFilesAfterEnv: ['<rootDir>/src/__tests__/setup.ts']
};

export default config;