tsconfig.json

{
  "compilerOptions": {
    "module": "commonjs",
    "target": "esnext",
    "jsx": "preserve",
    "lib": ["dom", "esnext", "es2020"],
    "strict": true,
    "noEmit": true,
    "isolatedModules": true,
    "esModuleInterop": true,
    "skipLibCheck": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "removeComments": false,
    "preserveConstEnums": true
  },
  "rules": {
    "quotemark": [true, "single"]
  },
  "include": ["./src/**/*"],
  "exclude": ["node_modules", "public", ".cache"]
}

/* https://dev.to/speshov/how-to-setup-gatsbyjs-starter-with-typescript-eslint-prettier-4jh3
{
  "compilerOptions": {
    "module": "commonjs",
    "target": "esnext",
    "jsx": "preserve",
    "lib": ["dom", "esnext"],
    "strict": true,
    "noEmit": true,
    "isolatedModules": true,
    "esModuleInterop": true,
    "noUnusedLocals": false
  },
  "exclude": ["node_modules", "public", ".cache"]
}
*/

// https://github.com/resir014/gatsby-starter-typescript-plus/blob/master/tsconfig.json
// {
//   "compilerOptions": {
//     "module": "commonjs",
//     "target": "esnext",
//     "jsx": "preserve",
//     "lib": ["dom", "es2015", "es2017"],
//     "strict": true,
//     "noEmit": true,
//     "isolatedModules": true,
//     "esModuleInterop": true,
//     "skipLibCheck": true,
//     "noUnusedLocals": true,
//     "noUnusedParameters": true,
//     "removeComments": false,
//     "preserveConstEnums": true
//   },
//   "include": [./src/**/*"]
// }