tsconfig.json

{
  "compilerOptions": {
    "target": "es6", /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017','ES2018' or 'ESNEXT'. */
    "module": "commonjs", /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */
    "lib": [
      "es6",
      "dom"
    ], /* Specify library files to be included in the compilation. */
    "sourceMap": true,
    "baseUrl": "src",
    "outDir": "./dist", // output directory to build to (irrelevant because we use Webpack most of the time)
    "strict": true, /* Enable all strict type-checking options. */
    "noImplicitAny": true, /* Raise error on expressions and declarations with an implied 'any' type. */
    "noImplicitThis": true, /* Raise error on 'this' expressions with an implied 'any' type. */
    "noImplicitReturns": true, /* Report error when not all code paths in function return a value. */
    "strictNullChecks": true, /* Raise error if calling props on objects that could be null*/
    "noFallthroughCasesInSwitch": true, /* Report errors for fallthrough cases in switch statement. */
    "allowSyntheticDefaultImports": true, /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
    "esModuleInterop": true, /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
    "experimentalDecorators": true, /* Enables experimental support for ES7 decorators. */
    "emitDecoratorMetadata": true, /* Enables experimental support for emitting type metadata for decorators. */
  },
  "exclude": [
    "node_modules"
  ],
  "awesomeTypeScriptLoaderOptions": {
    "useWebpackText": true
  }
}