tsconfig.json

{
  "compileOnSave": false,
  "compilerOptions": {
    "target": "es2017",
    "module": "es2015",
    "moduleResolution": "node",
    "inlineSourceMap": true,
    "allowSyntheticDefaultImports": true,
    "strict": true,
    "noImplicitAny": true,
    "strictNullChecks": true,
    "strictFunctionTypes": true,
    "strictPropertyInitialization": true,
    "noImplicitThis": true,
    "alwaysStrict": true,
    "noUnusedLocals": true,
    "noUnusedParameters": false,
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": true,
    "traceResolution": false,
    "listEmittedFiles": false,
    "listFiles": false,
    "pretty": true,
    "lib": ["es2017", "dom"],
    "outDir": "dist",
    "rootDir": "src",
    "declaration": true,
    "types": [],
    "typeRoots": ["node_modules/@types"]
  },
  "include": ["src/**/*", "src/types.d.ts"],
  "exclude": ["node_modules/**"]
}