tsconfig.json

{
    "compilerOptions": {
        "jsx": "react",
        "allowUnreachableCode": false,
        "allowUnusedLabels": false,
        "allowJs": true,
        "allowSyntheticDefaultImports": false,
        "alwaysStrict": true,
        "experimentalDecorators": false,
        "forceConsistentCasingInFileNames": true,
        "module": "commonjs",
        "moduleResolution": "node",
        "noEmitOnError": false,
        "noFallthroughCasesInSwitch": true,
        "noUnusedLocals": true,
        "noUnusedParameters": true,
        "noImplicitReturns": true,
        "noImplicitThis": true,
        "preserveConstEnums": false,
        "pretty": true,
        "outDir": "./lib",
        "strictNullChecks": true,
        "suppressExcessPropertyErrors": false,
        "target": "es5",
        "skipLibCheck": true,
        "typeRoots": [
            "./node_modules/@types",
            "./typings"
        ],
        "lib": [
            "dom",
            "es2015",
            "es5",
            "es6"
        ]
    },
    "include": [
        "./src/**/*",
        "!./src/**/__tests__/*",
        "!./node_modules"
    ]
}