tsconfig.json

{
    "compilerOptions": {
        "module": "commonjs",
        "target": "es6",
        "declaration": false,
        "moduleResolution": "node",
        "emitDecoratorMetadata": true,
        "experimentalDecorators": true,
        "removeComments": true,
        "allowSyntheticDefaultImports": true,
        "preserveConstEnums": true,
        "sourceMap": true,
        "strictNullChecks": false,
        "forceConsistentCasingInFileNames": true,
        "noFallthroughCasesInSwitch": true,
        "noImplicitAny": false,
        "noImplicitReturns": true,
        "noImplicitThis": true,
        "noUnusedLocals": true,
        "noUnusedParameters": false,
        "lib": [
            "es2017",
            "es2016",
            "es2015",
            "es6",
            "dom",
            "esnext.asynciterable"
        ]
    },
    "include": [
        "./**/*"
    ],
    "exclude": [
        "node_modules",
        "**/*.spec.ts"
    ]
}