tsconfig.build.json

{
  "include": ["./src/**/*.ts"],
  "compilerOptions": {
    "esModuleInterop": true,
    "forceConsistentCasingInFileNames": true,
    "lib": ["esnext", "DOM"],
    "moduleResolution": "node",
    "module": "esnext",
    "strict": true,
    "target": "es5",
    "sourceMap": true,
    "outDir": "./lib",
    "declaration": true,
    "declarationDir": "./lib",
    "declarationMap": true
  },
  "exclude": ["./src/dev"]
}