tsconfig.json

{
  "compilerOptions": {
    "allowSyntheticDefaultImports": true,
    "experimentalDecorators": true,
    "module": "esnext",
    "target": "es2018",
    "lib": ["es6", "esnext", "es2015", "es2017.object"],
    "suppressImplicitAnyIndexErrors": true,
    "moduleResolution": "node",
    "emitDecoratorMetadata": true,
    "sourceMap": true,
    "declaration": true,
    "outDir": "./dist/",
    "rootDir": "./src/",
    "noImplicitAny": true,
    "noImplicitThis": true,
    "alwaysStrict": true,
    "noImplicitReturns": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "resolveJsonModule": true,
    "importHelpers": true,
    "typeRoots": [ "./types", "./node_modules/@types"],
    "baseUrl": ".",
    "paths": {
      "*": ["./types/*"]
    }
  },
  "include": ["src/**/*.ts"],
  "exclude": ["node_modules"]
}