jest.json

{
  "moduleFileExtensions": ["js", "json", "ts", "tsx"],
  "rootDir": "./test",
  "testEnvironment": "node",
  "testRegex": ".test.ts$",
  "extensionsToTreatAsEsm": [".ts"],
  "transformIgnorePatterns": ["node_modules"],
  "transform": {
    "^.+\\.(t|j)sx?$": [
      "ts-jest",
      { 
        "useESM": true,
        "tsconfig": "./tsconfig.test.json",
        "isolatedModules": true
      }
    ]
  },
  "moduleNameMapper": {
    "^(\\.{1,2}/.*)\\.js$": "$1"
  },
  "testTimeout": 10000,
  "preset": "ts-jest/presets/default-esm",
  "verbose": true,
  "silent": true,
  "forceExit": true
}