tsconfig.json

{
  "compilerOptions": {
    "target": "esnext",
    "useDefineForClassFields": true,
    "module": "ESNext",
    "lib": ["ESNext", "DOM", "DOM.Iterable"],
    "skipLibCheck": true,

    // Include FVTT Types
    "types": [
      "fvtt-types"
    ],
    /* Bundler mode */
    "moduleResolution": "bundler",
    "allowImportingTsExtensions": true,
    "isolatedModules": true,
    "moduleDetection": "force",
    "noEmit": true,

    /* Linting */
    "strict": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "noFallthroughCasesInSwitch": true,
    "noUncheckedSideEffectImports": true
  },
  "include": ["src"]
}