tsconfig.json

{
  "compilerOptions": {
    /* 
      Note that the "module" setting will be overriden by nextjs automatically
      (cf. https://github.com/zeit/next.js/discussions/10780).
      If you need to change it, you should use the --compiler-options or provide a separate 
      tsconfig.json entirely.
    */
    "module": "esnext",
    "target": "ES2019",
    "lib": ["dom", "dom.iterable", "esnext"],
    "allowJs": true,
    "skipLibCheck": true,
    "strict": false,
    "forceConsistentCasingInFileNames": true,
    "noEmit": true,
    "esModuleInterop": true,
    "moduleResolution": "node",
    "resolveJsonModule": true,
    "isolatedModules": true,
    "jsx": "preserve",
    "incremental": true,
    "strictNullChecks": true
  },
  "exclude": ["node_modules"],
  "include": ["next-env.d.ts", "**/*.ts", "**/*.tsx"],
  "ts-node": {
    "compilerOptions": {
      "module": "commonjs"
    }
  }
}