tsconfig.json

{
    "compileOnSave": false,
    "include": [
        "src"
    ],
    "exclude": [
        "test",
        "dist",
        "node_modules"
    ],
    "compilerOptions": {
        "outDir": "./",
        "strict": true,
        "declaration": true,
        "sourceMap": false,
        "pretty": true,
        "moduleResolution": "Node",
        "emitDecoratorMetadata": true,
        "experimentalDecorators": true,
        "allowSyntheticDefaultImports": true,
        "module": "ES2015",
        "target": "ES2015",
        "typeRoots": [
            "node_modules/@types"
        ],
        "types": [
            "@types/jasmine",
            "@types/node"
        ],
        "lib": [
            "ES2017",
            "DOM",
            "ES2015.Generator",
            "ES2015.Iterable",
            "ES2015.Promise",
            "ES2015.Symbol",
            "ES2015.Symbol.WellKnown",
            "ESNext.AsyncIterable"
        ]
    }
}