tsconfig.json

{
    "compilerOptions": {
        "alwaysStrict": true,
        "declaration": true,
        "declarationMap": true,
        "downlevelIteration": true,
        "importHelpers": true,
        "inlineSources": true,
        "lib": [
            "es6",
            "dom"
        ],
        "moduleResolution": "node",
        "noEmitHelpers": true,
        "noFallthroughCasesInSwitch": true,
        "noImplicitAny": true,
        "noImplicitReturns": true,
        "noImplicitThis": true,
        "noUnusedLocals": true,
        "noUnusedParameters": true,
        "preserveWatchOutput": true,
        "pretty": true,
        "sourceMap": true,
        "strict": true,
        "strictBindCallApply": false,
        "target": "ES2015",
        "noErrorTruncation": true,
        "allowSyntheticDefaultImports": true,
        "baseUrl": "./packages"
    }
}