tsconfig.json

{
  "compilerOptions": {
    "allowImportingTsExtensions": true,
    "allowJs": false,
    "composite": true,
    "declaration": true,
    "declarationMap": true,
    "esModuleInterop": true,
    "forceConsistentCasingInFileNames": true,
    "incremental": true,
    "isolatedModules": true,
    "lib": ["dom", "esnext"],
    "module": "commonjs",
    "noEmit": true,
    "noEmitOnError": true,
    "resolveJsonModule": true,
    "skipLibCheck": false,
    "sourceMap": true,
    "strict": true,
    "strictNullChecks": true,
    "target": "esnext",

    /* New checks being tried out */
    "exactOptionalPropertyTypes": true,
    "noFallthroughCasesInSwitch": true,
    "noImplicitOverride": true,
    "noPropertyAccessFromIndexSignature": true,
    "noUncheckedIndexedAccess": true,

    /* Additional checks */
    "importsNotUsedAsValues": "remove",
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "noUncheckedSideEffectImports": true
  },
  "include": ["**/*.ts"],
  "exclude": []
}