tsconfig.json

{
  "compileOnSave": false,
  "compilerOptions": {
    "module": "es2020",
    "outDir": "./dist/out-tsc",
    "sourceMap": true,
    "incremental": true,
    "declaration": false,
    "moduleResolution": "node",
    "resolveJsonModule": true,
    "skipLibCheck": true,
    "emitDecoratorMetadata": true,
    "allowSyntheticDefaultImports": true,
    "esModuleInterop": true,
    "allowJs": true,
    "paths": {
      "mini-signals": [
        "../node_modules/mini-signals/index.js"
      ]
    },
    "experimentalDecorators": true,
    "target": "es5",
    "typeRoots": [
      "node_modules/@types"
    ],
    "lib": [
      "es2017",
      "es2016",
      "es2015",
      "dom"
    ]
  },
  "files": [
    "src/main.ts",
    "src/polyfills.ts"
  ],
  "include": [
    "src/**/*.d.ts"
  ],
  "exclude": [
    "node_modules"
  ]
}