TTC
Theo's Typesafe Cult•17mo ago
stanisław

trpc error throwing and catching on the client

Hi I am throwing an error like this on the server: 
      throw new TRPCError({ code: 'CONFLICT', message: 'Email already exists!' });
      throw new TRPCError({ code: 'CONFLICT', message: 'Email already exists!' });
And I'd like to catch it like this on the client: 
 if (error instanceof TRPCClientError) {
        
        if (error.data.code === 'CONFLICT') {
          form.setError('email', { message: 'Email is already taken' });
        } 
 if (error instanceof TRPCClientError) {
        
        if (error.data.code === 'CONFLICT') {
          form.setError('email', { message: 'Email is already taken' });
        }
However TRPCClientError doesnt assure me that data is there, how can I check it and still have full typesafety?
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1 Reply
stanisław
stanisławOP•17mo ago
error instanceof TRPCError however does what I want but the error thrown by useQuery is not instance of TRPCError 😄

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