TypeLite -> TypeScript Enum -> Runtime error: Uncaught ReferenceError: TSEnum is not defined

问题

We are using TypeLite to generate Enums in TypeScript.

C#:

[TsEnum(Module = "CustomEnum")]
public enum TSEnum {
    None,
    Test
}

http://type.litesolutions.net/

Generates this code in a file called Enums.ts:

namespace CustomEnum {
    export enum TSEnum {
        None = 0,
        Test =1
    }
}

As default TypeLite generates a const enum but in order to be able to get the names of the TypeScript enum entry const has been removed. This was done by editing TypeLite.Net4.tt and changing:

<# var ts = TypeScript.Definitions()
        .WithReference("Enums.ts")
        .ForLoadedAssemblies();
#>

To this:

<# var ts = TypeScript.Definitions()
        .WithReference("Enums.ts")
        .ForLoadedAssemblies()
        .AsConstEnums(false);
#>

https://bitbucket.org/LukasKabrt/typelite/issues/96/allow-option-of-export-const-enum-to-be

https://www.typescriptlang.org/docs/handbook/enums.html#const-enums

I do not get any compile warning but at runtime I get the following error

Uncaught ReferenceError: TSEnum is not defined

Code generating error:

console.log(CustomEnum.TSEnum[CustomEnum.TSEnum.None]);

Or simply:

console.log(CustomEnum.TSEnum.None);

https://stackoverflow.com/a/36743651/3850405

If I however write it like this everything works:

enum TSEnum {
    None = 0,
    Test = 1,
}

console.log(TSEnum[TSEnum.None]);

What can I do to fix this? I'm using webpack for bundling if this could affect something. I have tried to import the Enums but it does not make any difference.

import '../../../Scripts/Enums';

If I manually entered export to CustomEnum and then imported the enum the code worked but the declarations that used CustomEnum.TSEnum in TypeLite.Net4.d.tt could no longer find the property.

import { TouchPoint } from '../../../Scripts/Enums';

Enums.ts:

export namespace CustomEnum {
    export enum TSEnum {
        None = 0,
        Test =1
    }
}

回答1:

Could not find a good solution so I decided to create a new enum object that can be used in front end. I removed .AsConstEnums(false) from TypeLite.Net4.d.tt and created the following code:

export enum TSEnumObject {
    None = CustomEnum.TSEnum.None,
    Test = CustomEnum.TSEnum.Test
}

console.log(TSEnumObject[TSEnumObject.None]);

来源：https://stackoverflow.com/questions/48418792/typelite-typescript-enum-runtime-error-uncaught-referenceerror-tsenum-is

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