tsconfig.types.json

{
  // Common tsconfig used for type checking and generating declaration files.
  // Docs: https://www.typescriptlang.org/tsconfig
  "exclude": [
    "**/__specs__/**",
    "**/__tests__/**",
    "**/*.spec.ts",
    "**/*.spec.tsx",
    "**/*.test.ts",
    "**/*.test.tsx"
  ],
  "compilerOptions": {
    "module": "NodeNext",
    "lib": ["DOM", "ESNext"],
    // output .d.ts declaration files for consumers
    "declaration": true,
    // output .d.ts declaration files only (esbuild will transpile to .js for us)
    "emitDeclarationOnly": true,
    // stricter type-checking for stronger correctness. Recommended by TS
    "strict": true,
    // linter checks for common issues
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": true,
    // noUnused* overlap with @typescript-eslint/no-unused-vars, can disable if duplicative
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    // use modern Node's module resolution algorithm, instead of the legacy TS one
    "moduleResolution": "NodeNext",
    // transpile JSX to React.createElement
    "jsx": "react",
    // interop between ESM and CJS modules. Recommended by TS
    "esModuleInterop": true,
    // significant perf increase by skipping checking .d.ts files, particularly those in node_modules. Recommended by TS
    "skipLibCheck": true,
    // error out if import and file system have a casing mismatch. Recommended by TS
    "forceConsistentCasingInFileNames": true,
    // esbuild transpiles files individually, so ensure each file is valid when isolated
    "isolatedModules": true
  }
}