tsconfig.json

{
  "compilerOptions": {
    /* Language and Environment */
    "target": "es2021" /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */,
    "lib": [
      "es2021"
    ] /* Specify a set of bundled library declaration files that describe the target runtime environment. */,
    "jsx": "react" /* Specify what JSX code is generated. */,

    /* Modules */
    "module": "es2022" /* Specify what module code is generated. */,
    "moduleResolution": "node" /* Specify how TypeScript looks up a file from a given module specifier. */,
    "types": [
      "@cloudflare/workers-types/2023-07-01"
    ] /* Specify type package names to be included without being referenced in a source file. */,
    "resolveJsonModule": true /* Enable importing .json files */,

    // strictest config
    // see: https://github.com/tsconfig/bases/blob/bb30eb342007a5fe4a45a5af9cf28868bde5ae53/bases/strictest.json
    "strict": true,
    "allowUnusedLabels": false,
    "allowUnreachableCode": false,
    "exactOptionalPropertyTypes": true,
    "noFallthroughCasesInSwitch": true,
    "noImplicitOverride": true,
    "noImplicitReturns": true,
    "noPropertyAccessFromIndexSignature": true,
    "noUncheckedIndexedAccess": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,

    "isolatedModules": true,

    "checkJs": true,

    "esModuleInterop": true,
    "skipLibCheck": true,
    "forceConsistentCasingInFileNames": true
  },
  "exclude": ["node_modules", "eslintrc.cjs"]
}