tsconfig.json

{
  "compilerOptions": {
    /* Basic Options */
    "target": "es5",
    "module": "node16",
    "lib": ["ES2015.Core"],
    "declaration": true,
    "declarationMap": true,
    "sourceMap": true,
    "outDir": "lib",
    // esModuleInterop is implied by `--module node16`,
    // but ts-jest doesn't recognize that and needs it listed.
    "esModuleInterop": true,

    /* Strict Type-Checking Options */
    "strict": true,

    /* Additional Checks */
    "forceConsistentCasingInFileNames": true,
    "isolatedModules": true,
    "noFallthroughCasesInSwitch": true,
    "noImplicitOverride": true,
    "noImplicitReturns": true,
    "noPropertyAccessFromIndexSignature": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
  },
  "include": ["src"],
  "exclude": [
    "**/*.spec.ts",
    "**/__fixtures__/*",
    "**/__tests__/*",
    "**/__snapshots__/*",
  ],
}