tsconfig.json

{
  "compilerOptions": {
    // build settings
    "esModuleInterop": true,
    "sourceMap": true,
    "removeComments": true,
    "resolveJsonModule": true,
    // type check settings
    "strict": true,
    "skipLibCheck": true,
    "noImplicitOverride": true,
    "noPropertyAccessFromIndexSignature": true,
    "module": "esnext",
    "target": "es2021",
    "moduleResolution": "bundler",
    "lib": ["dom", "dom.iterable", "esnext"],
    "noEmit": true,
    "isolatedModules": true,
    "jsx": "preserve",
    // Next.js doesn't support project references, so composite is not useful, and enabling `composite`, won't allow us to disable `declaration`
    "composite": false,
    "incremental": true,
    // Since noEmit is enabled, these two options won't affect anything, but they help with "likely not portable" errors in VS Code.
    // https://github.com/microsoft/TypeScript/issues/42873#issuecomment-1766987305
    "declaration": false,
    "declarationMap": false,
    // enforced by Next.js
    "allowJs": true,
  },
  "include": ["next-env.d.ts", "**/*.ts", "**/*.tsx", "src/pages/index.msx"],
  "exclude": ["node_modules"],
}