tsconfig.json

{
  "extends": "../../tsconfig.json",
  "compilerOptions": {
    "target": "ESNext" /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */,
    "module": "ESNext" /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */,
    "outDir": "build",
    "declaration": true,
    "declarationMap": true,
    "sourceMap": true,
    "strict": true /* Enable all strict type-checking options. */,
    "esModuleInterop": true /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */,
    "skipLibCheck": true /* Skip type checking of declaration files. */,
    "noUnusedLocals": true,
    "forceConsistentCasingInFileNames": true /* Disallow inconsistently-cased references to the same file. */,
    "moduleResolution": "node",
    "resolveJsonModule": true
  },
  "include": ["../../src/**/*", "demo.ts"],
  "exclude": ["**/*.test.ts", "build/**/*"]
}