tsconfig.json

{
    "compileOnSave": true,
    "compilerOptions": {
        "target": "es5",
        "module": "commonjs",
        "moduleResolution": "node",
        "emitDecoratorMetadata": true,
        "experimentalDecorators": true,
        "allowSyntheticDefaultImports": true,
        "noUnusedLocals": true,
        "noUnusedParameters": true,
        "useDefineForClassFields": true,
        "sourceMap": true,
        "jsx": "react",
        "strictNullChecks": true,
        "outDir": "lib",
        "rootDir": "src",
        "noEmitOnError": false,
        "lib": [
            "dom",
            "es7"
        ],
        "typeRoots": [
            "node_modules/@types"
        ],
        "declaration": true
    },
    "exclude": [
        "node_modules",
        "build",
        "lib",
        "__tests__",
        "__mocks__",
        "index.d.ts"
    ]
}