{ "compilerOptions": { "target": "ESNext", "useDefineForClassFields": true, "lib": ["DOM", "DOM.Iterable", "ESNext"], "allowJs": false, "skipLibCheck": true, "esModuleInterop": true, // Often helpful for broader library compatibility "allowSyntheticDefaultImports": true, "strict": true, "forceConsistentCasingInFileNames": true, "module": "ESNext", "moduleResolution": "Bundler", "resolveJsonModule": true, "isolatedModules": true, "noEmit": true, "jsx": "react-jsx", // This line makes Vitest's global APIs (describe, it, expect) available everywhere // without needing to import them. "types": ["vitest/globals"] }, // This is the most important part: It tells TypeScript to include ALL files // within the 'src' directory, including your new 'vite-env.d.ts' file. "include": ["src"], "references": [{ "path": "./tsconfig.node.json" }] }