tsconfig.base.json

{
  "compilerOptions": {
    "composite": true,
    "incremental": true,
    "module": "esnext",
    "target": "esnext",
    "moduleResolution": "node",
    "esModuleInterop": true,
    "resolveJsonModule": true,
    "allowSyntheticDefaultImports": true,
    "allowJs": true,
    "checkJs": false,
    "skipLibCheck": true,
    "downlevelIteration": true,
    "jsx": "react-jsx",

    // strict checks
    "strict": true,
    "alwaysStrict": true,
    "strictBindCallApply": false,
    "strictFunctionTypes": false,
    "strictNullChecks": false,
    "strictPropertyInitialization": false,
    "noImplicitAny": false,
    "noImplicitThis": false,
    "forceConsistentCasingInFileNames": true,

    // additional checks
    "noFallthroughCasesInSwitch": true,
    "noImplicitReturns": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true
  },
  "exclude": ["**/node_modules", "**/vendor"]
}