incorrect error: exported enum value must be declared extern

[Jarred-Sumner]

If you export an enum, you get this message:

./src/javascript/jsc/bindings/exports.zig:721:22: error: exported enum value must be declared extern
    @export(ErrorCode.ParserErrorCode, .{ .name = "Zig_ErrorCodeParserError" });
                     ^

If you follow the suggestion in the above error, you get an error that enums cannot be extern

/Users/jarred/Code/esdev/src/javascript/jsc/bindings/exports.zig:110:23: error: enums do not support 'packed' or 'extern'; instead provide an explicit integer tag type
pub const ErrorCode = extern enum(ErrorCodeInt) {
                      ^

This feels like a bug, maybe in AST check or maybe in @export.

For now, I can work around this with an @enumToInt:

    pub const ParserErrorCode = @enumToInt(ErrorCode.from(error.ParserError));

[tauoverpi]

Extern enums were removed from the language #2115 (comment) so the error message itself is wrong.