Vikram R questions

• include multiple node_modules in tsconfig.json
• Uncaught ReferenceError: System is not defined angular 4
• compiled class problem in java try/catch block
• Angular Lazy Loading ( the module has not been imported into your module)
• data or datasets field are required to render char bar in angular 4
• ERROR TypeError: Cannot read property 'invalid' of undefined angular 4

Vikram R answers