tsconfig.json

{
  "compilerOptions": {
    "allowJs": true,
    "module": "commonjs",
    "noImplicitAny": true,
    "baseUrl": ".",
    "removeComments": true,
    "preserveConstEnums": true,
    "declaration": true,
    "target": "es2017",
    "lib": ["es2017", "dom"],
    "noEmit": true,
    "noUnusedLocals": true,
    "noImplicitReturns": true,
    "noImplicitThis": true,
    "alwaysStrict": true,
    "noUnusedParameters": false,
    "pretty": true,
    "noFallthroughCasesInSwitch": true,
    "allowUnreachableCode": false,
    "experimentalDecorators": true
  },
  "include": ["*.ts", "*.js"],
  "exclude": ["tests.ts"]
}