tsconfig.json

{
    "compilerOptions": {
        "target": "es2016",
        "module": "commonjs",
        "outDir": "./lib",
        "allowSyntheticDefaultImports": true,
        "esModuleInterop": true,
        "alwaysStrict": true,
        "strictNullChecks": true,
        "strictBindCallApply": true,
        "strictFunctionTypes": true,
        "strictPropertyInitialization": true,
        "noImplicitThis": true,
        "noImplicitAny": true,
        "noImplicitReturns": true,
        "noFallthroughCasesInSwitch": true,
        "noUnusedLocals": true,
        "noUnusedParameters": true,
        "noErrorTruncation": true,
        "resolveJsonModule": true,
        "inlineSourceMap": true,
        "declaration": true,
        "types": [
            "chai",
            "node",
            "mocha",
            "web3",
            "sinon"
        ]
    },
    "include": [
        "index.ts",
        "src/*.ts",
        "src/**/*.ts",
        "src/**/**/*.ts"
    ],
    "exclude": [
        "node_modules"
    ]
}