tsconfig.json

{
  "compilerOptions": {
    "alwaysStrict": true,
    "noImplicitAny": true,
    "preserveConstEnums": true,
    "sourceMap": true,
    "newLine": "LF",
    "target": "es2017",
    "moduleResolution": "node",
    "noUnusedLocals": true,
    "noUnusedParameters": false,
    "strict": true,
    "module": "commonjs",
    "outDir": "./dist",
    "declaration": true,
    "declarationMap": true,
    "importHelpers": true,
    "declarationDir": "./typings",
    "lib": ["es5", "es6", "es7", "esnext", "dom"],
    "esModuleInterop": true,
    "downlevelIteration": true,
    "useUnknownInCatchVariables": false,
    "skipLibCheck": true,
  },
  "compileOnSave": true,
  "exclude": ["node_modules"],
  "include": ["./src/**/*.ts", "./tests/**/*.ts"]
}