tsconfig.json

{
    "compilerOptions": {
        "outDir": "./dist/",
        "sourceMap": true,
        "declaration": true,
        "strictNullChecks": true,
        "strict":true,
        "forceConsistentCasingInFileNames": true,
        "noImplicitReturns": true,
        "noImplicitAny": true,
        "noUnusedLocals": true,
        "noUnusedParameters":true,
        "suppressImplicitAnyIndexErrors": true,
        "module": "commonjs",
        "moduleResolution": "node",
        "target": "ES5",
        "lib": ["ESNext", "DOM"],
        "preserveSymlinks": true,
        "allowSyntheticDefaultImports": true,
        "esModuleInterop": true,
        "experimentalDecorators": true,
        "emitDecoratorMetadata": true,
        "resolveJsonModule": true,
        "typeRoots": ["./src/types", "./node_modules/@types"]
    },
    "include": ["./src/**/*", "src/types"],
    "compileOnSave": true
}