tsconfig.json

{
    "compilerOptions": {
        "noUnusedLocals": true,
        "noUnusedParameters": true,
        "target": "es6",
        "module": "commonjs",
        "moduleResolution": "node",
        "rootDir": ".",
        "outDir": "build",
        "lib": [ "es2016" ],
        "declaration": true,
        "sourceMap": true,
        "resolveJsonModule": true,
        "skipLibCheck": true,
        "types": ["node", "mocha", "chai", "sinon-chai"]
    },
    "exclude": [
        "node_modules",
        "build"
    ],
    "include": [
        "src",
        "test",
        "index.ts"
    ]
}