angularjs 2.0: Can't inject anything through component constructor()

Question

I am creating a sample application in angularjs 2.0. While developement I came across with a serious problem - I can\'t inject anything to the component through the construc

Answer 1

I see that your tsconfig.json isn't correct.

{ 
  "compilerOptions": { 
    "target": "es5", 
    "module": "commonjs", 
    "moduleResolution": "node", 
    "sourceMap": false, 
    "emitDecoratorMetadata": true, <== it should be true 
    "experimentalDecorators": true, 
    "removeComments": false, 
    "noImplicitAny": false, 
    "outDir": "dist" 
  } 
} 

This is the magic sauce for DI. emitDecoratorMetadata: true. This option will preserve type information in your object's metadata.

See also

• How does the TypeScript Angular DI magic work?
• Injecting services in services in Angular 2