tsconfig.json - protobuf.js - Git at Google

 {
     "compilerOptions": {
         "target": "ES5",
         "experimentalDecorators": true,
         "emitDecoratorMetadata": true
     }
 }
	{
	"compilerOptions": {
	"target": "ES5",
	"experimentalDecorators": true,
	"emitDecoratorMetadata": true
	}
	}