tsconfig.json

{
  "$schema": "http://json.schemastore.org/tsconfig",

  "compilerOptions": {
    "outDir": "lib",
    "rootDir": "src",

    "forceConsistentCasingInFileNames": true,
    "jsx": "react",
    "declaration": true,
    "sourceMap": true,
    "declarationMap": true,
    "inlineSources": true,
    "experimentalDecorators": true,
    "strict": true,
    "useUnknownInCatchVariables": false,
    "esModuleInterop": true,
    "noEmitOnError": false,
    "allowUnreachableCode": false,
    "importHelpers": true,

    "types": ["heft-jest", "webpack-env"],

    "module": "esnext",
    "moduleResolution": "node",
    "target": "es5",
    "lib": ["es5", "scripthost", "es2015.collection", "es2015.promise", "es2015.iterable", "dom"]
  },
  "include": ["src/**/*.ts", "src/**/*.tsx"],
  "exclude": ["node_modules", "lib"]
}