tsconfig.json

{
  "$schema": "https://json.schemastore.org/tsconfig",
  "extends": "ts-node/node16/tsconfig.json",
  "compilerOptions": {
    // Import aliases
    "baseUrl": ".",
    "paths": {
      "~/features/*": ["src/features/*"],
      "~/svg/*": ["src/svg/*"],
      "react": ["./node_modules/preact/compat/"],
      "react-dom": ["./node_modules/preact/compat/"]
    },
    // Enable top-level await, and other modern ESM features
    "target": "ESNext",
    "module": "ESNext",
    // Enable node-style module resolution, for things like npm package imports
    "moduleResolution": "node",
    // Enable JSON imports
    "resolveJsonModule": true,
    // Enable stricter transpilation for better output
    "isolatedModules": true,
    // Astro will directly run your TypeScript code, no transpilation needed
    "noEmit": true,
    // Enable strict type checking
    "strict": true,
    // Error when a value import is only used as a type
    "importsNotUsedAsValues": "error",
    // Preact integration
    "lib": ["es2021", "dom"],
    "esModuleInterop": true,
    "skipLibCheck": true,
    "forceConsistentCasingInFileNames": true,
    "jsx": "react-jsx",
    "jsxImportSource": "preact",
    "types": ["preact"]
  },
  "ts-node": {
    // It is faster to skip typechecking
    "transpileOnly": true,
    "files": true,
    "esm": true,
    "compilerOptions": {
      "target": "ESNext",
      "module": "ESNext",
      "esModuleInterop": true
    }
  }
}