tsconfig.json

{
  "compilerOptions": {
    "types": ["vitest/globals"],
    "target": "ES2020",
    "useDefineForClassFields": true,
    "lib": ["ES2020", "DOM", "DOM.Iterable"],
    "module": "ESNext",
    "skipLibCheck": true,
    "paths": {
      "#scss/*": ["./src/scss/*"]
    },

    /* Bundler mode */
    "allowJs": true,
    "allowSyntheticDefaultImports": true,
    "allowImportingTsExtensions": true,
    "esModuleInterop": true,
    "isolatedModules": true,
    "jsx": "react-jsx",
    "moduleResolution": "Node",
    "noEmit": true,
    "resolveJsonModule": true,

    /* Linting */
    "strictNullChecks": true,
    "strict": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "noFallthroughCasesInSwitch": true
  },
  // https://github.com/microsoft/TypeScript/issues/56749 Have to exclude *.mdx files
  "include": ["custom.d.ts", "src/**/*.ts", "src/**/*.tsx", "config/**/*.ts"],
  "references": [{ "path": "./tsconfig.node.json" }]
}