/** @type {import('jest').Config} */
export default {
// Test environment
testEnvironment: 'node',
// TypeScript support
preset: 'ts-jest/presets/default-esm',
extensionsToTreatAsEsm: ['.ts'],
// Module resolution
moduleNameMapping: {
'^(\\.{1,2}/.*)\\.js$': '$1',
},
// Test file patterns
testMatch: [
'**/tests/**/*.test.ts',
'**/tests/**/*.spec.ts'
],
// Coverage configuration
collectCoverage: false, // Enable only when needed
collectCoverageFrom: [
'src/**/*.ts',
'!src/**/*.d.ts',
'!src/types/**',
'!src/**/*.test.ts',
'!src/**/*.spec.ts'
],
coverageDirectory: 'coverage',
coverageReporters: [
'text',
'text-summary',
'html',
'lcov'
],
// Coverage thresholds
coverageThreshold: {
global: {
branches: 90,
functions: 90,
lines: 90,
statements: 90
}
},
// Setup files
setupFilesAfterEnv: ['<rootDir>/tests/setup.ts'],
// Test timeout
testTimeout: 30000,
// Transform configuration
transform: {
'^.+\\.ts$': ['ts-jest', {
useESM: true,
tsconfig: {
module: 'esnext'
}
}]
},
// Module file extensions
moduleFileExtensions: ['ts', 'js', 'json'],
// Ignore patterns
testPathIgnorePatterns: [
'/node_modules/',
'/build/',
'/dist/'
],
// Clear mocks between tests
clearMocks: true,
// Verbose output
verbose: true,
// Error handling
errorOnDeprecated: true,
// Global variables
globals: {
'ts-jest': {
useESM: true
}
}
};
