userFacing error in typescript v2

[Jacob_SE]

https://www.palantir.com/docs/foundry/functions/user-facing-error/

Is there any way to make user facing error in typescript v2 similar to the one in v1 at the document above?

[jakehop]

Hi Jacob,

The package @osdk/legacy-client exports two user facing error types, that might be useful to you: FunctionEncounteredUserFacingError + QueryEncounteredUserFacingError

(There are a lot of other error types in there too)

I am not fully sure if this will work in e.g. Workshop, as this is the purpose of the original type.

If not, you could publish the function and import it in a TSv1 repository, where you wrap it in a function, which passes the error to a UserFacingError-type.

If you are not building in Workshop, you simple return the error as you would any other error in a TypeScript project.

[Jacob_SE]

Thank you for your reply.

I expected same type of red back-grounded warning to our users in workshop.

With below simple code, it works.

    const fileName = (await excelFile.fetchMetadata()).filename;
    if (!fileName.match(/\.(xlsx|xls)$/i)) {
        userFacingError("Invalid file extension. Please upload a file with '.xlsx' or '.xls' extension.");
    }


function userFacingError(message: string): never {
    throw new Error(message);
}