AngularJS to Angular5 — Upgrading a large application

tsconfig.json

{
 "compilerOptions": {
   "target": "es5",
   "module": "commonjs",
   "moduleResolution": "node",
   "sourceMap": true,
   "emitDecoratorMetadata": true,
   "experimentalDecorators": true,
   "noStrictGenericChecks": true,
   "lib" : ["es2015", "dom"],
   "noImplicitAny": true,
   "suppressImplicitAnyIndexErrors": true,
   "rootDir": "<your_main_App_js_folder>",
   "outDir": "dist/js"
 }
}