TypeScript ambient declaration and implementation in separate files

Question

I want to be able to provide an ambient declaration for an object in one file, but provide the implementation in another

Example:

Test.d.ts

interface TestConstructor {
    new(value?: any): void;
    ...
}

interface Test {
    ...
}

declare var Test: TestConstructor;

Test.ts

var Test = (function () {
    function Test(value) {
    }

    return Test;
})();

Error:

Subsequent variable declarations must have the same type. Variable 'Test' must be of type 'TestConstructor', but here has type '(value: any) => void'.

I know this seems to be an odd way of using TypeScript but the reason is that I want to build an object with features that TypeScript doesn't support (closures / value properties) so I can't use classes for this.

Additionally I want to ship Test.d.ts and Test.js, but NOT Test.ts

Answer 1

Your code doesn't indicate that Test.ts needs to reference Test.d.ts , so just compile Test.ts by itself

tsc Test.ts

instead of

tsc Test.ts Test.d.ts