tsconfig.json

{
  "compilerOptions": {
    "target": "ES2018", // modern output (for Webpack/Babel)
    "module": "ESNext", // Webpack handles modules
    "moduleResolution": "Node",
    "lib": ["ES2018", "DOM"], // include browser + ES features
    "allowJs": true,
    "checkJs": false,
    "sourceMap": true,
    "declaration": false, // no .d.ts in dist
    "esModuleInterop": true, // ✅ enables default imports for CommonJS
    "forceConsistentCasingInFileNames": true,
    "strict": false, // can set to true later if you want strict typing
    "skipLibCheck": true, // skip type checks for node_modules (e.g. d3 types)
    "resolveJsonModule": true,
    "isolatedModules": true,

    "outDir": "./build/tsc",
    "rootDir": "./src",

    "noEmitOnError": true
  },
  "include": ["src/**/*", "src/types/**/*"],
  "exclude": ["node_modules", "build", "dist"]
}