tsconfig.json

{
  "compilerOptions": {
    "target": "ESNext", /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
    "module": "ESNext", /* Specify what module code is generated. */
    "moduleResolution": "node", /* Specify how TypeScript looks up a file from a given module specifier. */
    "lib": ["esnext"],
    "declaration": true, /* Generate .d.ts files from TypeScript and JavaScript files in your project. */
    "declarationMap": true, /* Create sourcemaps for d.ts files. */
    "sourceMap": true, /* Create source map files for emitted JavaScript files. */
    "outDir": "./build", /* Specify an output folder for all emitted files. */
    "esModuleInterop": true, /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables 'allowSyntheticDefaultImports' for type compatibility. */
    "forceConsistentCasingInFileNames": true, /* Ensure that casing is correct in imports. */
    "strict": true, /* Enable all strict type-checking options. */
    "skipLibCheck": true, /* Skip type checking all .d.ts files. */
    "emitDeclarationOnly": true, /* Only output d.ts files and not JavaScript files. */
  },
  "include": ["index.ts", "types/*.d.ts", "types/block.types.ts"],
  "exclude": ["node_modules", "**/*.spec.ts"]
}