/** @type {import('jest').Config} */
module.exports = {
preset: 'ts-jest/presets/default-esm',
extensionsToTreatAsEsm: ['.ts'],
testEnvironment: 'node',
roots: ['<rootDir>/tests'],
testMatch: [
'<rootDir>/tests/**/*.test.ts'
],
setupFilesAfterEnv: ['<rootDir>/tests/setup.ts'], // Re-enabled with working ES module support
transform: {
'^.+\\.ts$': ['ts-jest', {
useESM: true,
tsconfig: {
module: 'esnext',
target: 'es2020',
moduleResolution: 'node',
allowSyntheticDefaultImports: true,
esModuleInterop: true
}
}]
},
collectCoverageFrom: [
'src/**/*.ts',
'!src/tests/**'
],
coverageDirectory: 'coverage',
coverageReporters: ['text', 'lcov'],
testTimeout: 30000,
verbose: true,
maxWorkers: 1,
// Essential for ES modules with Jest
moduleFileExtensions: ['ts', 'js', 'mjs'],
// Handle ES module imports properly - map .js imports to TypeScript files and preserve ES modules
moduleNameMapper: {
'^(?:\\.{1,2}/)+dist/(.*)\\.js$': '<rootDir>/src/$1',
'^(\\.{1,2}/.*)\\.js$': '$1'
},
// Transform ES modules from node_modules if needed
transformIgnorePatterns: [
'node_modules/(?!(@modelcontextprotocol)/)'
],
// Support for dynamic imports and ES modules
testPathIgnorePatterns: [
'/node_modules/'
]
};
