jest.config.js

module.exports = {
  roots: ["<rootDir>"],
  testEnvironment: "node",
  transform: {
    "^.+\\.ts?$": [
      "ts-jest",
      {
        tsconfig: {
          lib: ["ES2021", "ES2022.Error", "DOM"], // We need to include DOM for tests
        },
      },
    ],
  },
  moduleFileExtensions: ["ts", "js", "json", "node"],
  collectCoverage: true,
  clearMocks: true,
  coverageDirectory: "coverage",
  fakeTimers: { enableGlobally: true },
  transformIgnorePatterns: ["<rootDir>/node_modules/"],
  testPathIgnorePatterns: ["<rootDir>/lib/", "/node_modules/", "/examples/"],
  // we want to depend on the source version in the tests to get correct coverage
  moduleNameMapper: {
    "^(langfuse(?!-server).*)$": "<rootDir>/$1/index",
  },
  // we need to exclude the modules in the examples folder from the module lookup as they would collide
  modulePathIgnorePatterns: ["<rootDir>/examples/", "<rootDir>/langfuse-server/"],
};