tsconfig.json

{
  "extends": "./.svelte-kit/tsconfig.json",
  "compilerOptions": {
    "allowJs": true,
    "checkJs": true,
    "esModuleInterop": true,
    "allowSyntheticDefaultImports": true,
    "forceConsistentCasingInFileNames": true,
    "resolveJsonModule": true,
    "skipLibCheck": true,
    "sourceMap": true,
    "strict": true,
    "strictFunctionTypes": true,
    "strictNullChecks": true,
    "noUncheckedIndexedAccess": true,
    "noPropertyAccessFromIndexSignature": true,
    "strictPropertyInitialization": true,
    "moduleResolution": "bundler",
    "plugins": [{
      "name": "typescript-svelte-plugin",
      // the following options can be set additionally; they are optional; their default values are listed here
      "enabled": true, // enables this plugin
      "assumeIsSvelteProject": false // if true, skip detection and always assume it's a Svelte project
    }]
  },
  // Path aliases are handled by https://kit.svelte.dev/docs/configuration#alias
  // except $lib which is handled by https://kit.svelte.dev/docs/configuration#files
  //
  // If you want to overwrite includes/excludes, make sure to copy over the relevant includes/excludes
  // from the referenced tsconfig.json - TypeScript does not merge them in
  "exclude": ["./node_modules/**"]
}