jest.config.ts•812 B
import type { Config } from 'jest';
// Jest config for TypeScript + ESM using ts-jest
const config: Config = {
preset: 'ts-jest/presets/default-esm',
testEnvironment: 'node',
// Treat .ts as ESM to match project "type": "module"
extensionsToTreatAsEsm: ['.ts'],
// Map TS ESM-style internal .js imports back to TS paths during tests
moduleNameMapper: {
'^(\\.{1,2}/.*)\\.js$': '$1',
},
// Include source in coverage collection (optional)
collectCoverageFrom: ['src/**/*.{ts,tsx}', '!src/**/__tests__/**'],
testMatch: ['**/src/__tests__/**/*.test.ts'],
// Configure ts-jest via transform with ESM + project tsconfig
transform: {
'^.+\\.(ts|tsx)$': [
'ts-jest',
{
useESM: true,
tsconfig: 'tsconfig.json',
},
],
},
};
export default config;