Disambiguating between module and variable when using `let`

[NoelAbrahams]

Hi,

In the code below, I'm attempting to refer to the foo module, but the compiler issues an error:

declare module foo {

    interface Bar {

    }
}

// Error: Block-scoped variable 'foo' used before its declaration.
let foo: foo.Bar; 

Is this expected? And how do I make this work without using `var'? I would like to use the same name for the module and the variable in order to avoid introducing unnecessary globals..

[danquirk]

The let foo and var foo behavior should just be the same, no error. We know a dotted identifier in type position has to be a container (like a namespace) and not the value foo.

[NoelAbrahams]

Here's another one taken from the NodeJS declarations:

declare module "punycode" {
    interface ucs2 {
        decode(string: string): string;
        encode(codePoints: number[]): string;
    }

// error TS2448: Build: Block-scoped variable 'ucs2' used before its declaration
    export let ucs2: ucs2;
}