What is the proper way to create an alias for an enum in TypeScript?

In the process of refactoring a large codebase, I came across this original definition:

export const enum Direction {
    NORTH,
    SOUTH,
}

and various instances of code using it, like so:

console.log(Direction.NORTH);

Now, with the updated definition being:

namespace xyz {
    export const enum Direction {
        NORTH,
        SOUTH,
    }
}

This allows me to now write:

console.log(xyz.Direction.NORTH);

However, I want to avoid modifying the existing code that accesses the enum values.

I attempted to do the following:

namespace xyz {
    export const enum Direction {
        NORTH,
        SOUTH,
    }
}

console.log(xyz.Direction.NORTH);

export type Direction = xyz.Direction;

console.log(Direction.NORTH);

But, encountered an error on the last line:

'Direction' only refers to a type, but is being used as a value here.

Answer №1

Create a new type and value for Export Direction:

namespace xyz {
    export const enum Direction {
        EAST,
        WEST,
    }
}

export import Direction = xyz.Direction;

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