tsconfig.browser.json

{
  "compilerOptions": {
    "lib": [
      "es5",
      "es6"
    ],
    "target": "es6",
    "module": "es6",
    "declaration": true,
    "outDir": "./dist.browser",
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "sourceMap": true,
    "esModuleInterop": true,
    "strict": true,
    "downlevelIteration": true
  },
  "include": ["src"]
}