jest.config.json

{
  "rootDir": "./",
  "transform": {
    "^.+\\.(t|j)sx?$": "ts-jest/legacy"
  },
  "verbose": true,
  "fakeTimers": {
    "enableGlobally": true 
  },
  "testRegex": "(/__tests__/.*|(\\.|/)(test|spec))\\.ts$",
  "testPathIgnorePatterns": ["<rootDir>/lib"],
  "moduleFileExtensions": ["ts", "tsx", "js", "jsx", "json", "node"],
  "collectCoverage": true,
  "collectCoverageFrom": [
    "<rootDir>/__tests__/*.test.ts",
    "<rootDir>/src/**/**/**/*.ts"
  ],
  "coveragePathIgnorePatterns": [
    "<rootDir>/node_modules/",
    "<rootDir>/src/wasmLoaders/emscriptenImports.ts"
  ],
  "coverageReporters": ["json", "text", "lcov", "jest-badges"],
  "coverageDirectory": "coverage",
  "errorOnDeprecated": true
}