'What is the scope of a type alias?

What is the scope of a typescript type alias? I have this alias and I think that I might want to declare it globally somehow:

type ResouceResult<T> = T & {
    $promise: ng.IPromise<T>,
    $resolved: boolean
};

Solution 1:^[1]

declare it globally

If your file is a global, the type alias is global. If its a module, the type alias is a module.

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Solution 1