Navigating through the exported components of a module without explicit type declarations

So I'm in the process of developing a module with sub-modules for Angular. Here's the notation I'm using:

module App.services {
    export class SomeService { }
}

When initializing all services, I use the following code snippet:

function defToArray(def: any): any[] {
    return (def.dependencies || []).concat(def)
}

for (var s in App.services)
    app.service(s, defToArray(App.services[s]));

However, the line defToArray(App.services[s]) is throwing an error stating "Index signature of object type implicitly has an 'any' type".

I've attempted to cast it using

defToArray(<any>App.services[s])
and
defToArray(App.services[s] as any)
, but neither solution has worked.

Any suggestions on how to resolve this issue?

Answer №1

Bindings in casts are not very strict.

Instead of

defToArray(<any>App.services[s])

try

defToArray((<any>App.services)[s])

or if you prefer

defToArray((<{[key:string]:any}>App.services)[s])

To clarify, the objective here is not to change the type of App.services[s], but instead to provide type information for the access-by-index operator. This becomes crucial when noImplicitAny is activated (which in my opinion should always be enabled, so it's just something you get used to)

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