// Copyright (c) 2026 Robin Mordasiewicz. MIT License.
export default {
preset: 'ts-jest/presets/default-esm',
testEnvironment: 'node',
extensionsToTreatAsEsm: ['.ts'],
moduleNameMapper: {
'^(\\.{1,2}/.*)\\.js$': '$1',
},
transform: {
'^.+\\.tsx?$': [
'ts-jest',
{
useESM: true,
},
],
},
roots: ['<rootDir>/tests'],
testMatch: ['**/*.test.ts'],
// Use V8 coverage provider for better ESM support
coverageProvider: 'v8',
collectCoverageFrom: [
'src/**/*.ts',
'!src/**/*.d.ts',
'!src/types/**'
],
coverageThreshold: {
global: {
branches: 80,
functions: 80,
lines: 80,
statements: 80
}
}
};