Gulp Build gives error While Type cast mentioned for any variable

[iignatov]

I guess that you’re trying to use types in a JavaScript project. Types and class properties are valid only in TypeScript projects. For more details check out the following post:

@tim

Hey all! That is a valid TypeScript type, but it isn’t valid ES6/ES2015 syntax. Angular2 uses that type information in TypeScript projects for doing dependency injection, so in JS projects you need to use the static getter parameters to attach that information to the class (so Angular2 knows what thing it should inject).