tsconfig.json

{
  "compilerOptions": {
    "target": "ESNext",
    "useDefineForClassFields": true,
    "module": "ESNext",
    "lib": [
      "ES2020",
      "DOM",
      "DOM.Iterable"
    ],
    "skipLibCheck": true,
    /* Bundler mode */
    "moduleResolution": "Node",
    // "allowImportingTsExtensions": true,
    "allowSyntheticDefaultImports": true,
    "resolveJsonModule": true,
    "isolatedModules": true,
    "noEmit": true,
    "jsx": "preserve",
    /* Linting */
    "strict": false,
    "noUnusedLocals": false,
    "noUnusedParameters": false,
    "noFallthroughCasesInSwitch": true,

    /* Svelte */
    /**
     * Typecheck JS in `.svelte` and `.js` files by default.
     * Disable checkJs if you'd like to use dynamic types in JS.
     * Note that setting allowJs false does not prevent the use
     * of JS in `.svelte` files.
     */
    "allowJs": true,
    "checkJs": true,

    "types": [
      "node",
      "vite/client",
      "svelte"
    ]
  },
  "include": [
    "tools/**/*.ts",
    "src/**/*.ts",
    "src/**/*.d.ts",
    "src/**/*.tsx",
    "src/**/*.vue"
  ],
  "references": [
    {
      "path": "./tsconfig.node.json"
    }
  ],
  "root": "."
}