TRPCError that has TRPCError as cause

Having some troubles with error handling, specifically, my errors are double-wrapped in a TRPCError.

What I'm doing is basically having a mutation that does:

something: t.procedure
  .input(mySchema)
  .mutation() => Promise.reject(new Error('oh no'))),

something: t.procedure
  .input(mySchema)
  .mutation() => Promise.reject(new Error('oh no'))),

and then, the onError handler has:

onError({ error }) {
  console.log('onError', error.name, error.cause.name)
},

onError({ error }) {
  console.log('onError', error.name, error.cause.name)
},

which logs:

onError TRPCError TRPCError

onError TRPCError TRPCError

. If I then go further with

error.cause.cause.name

error.cause.cause.name

, I can see my error.

I already tried to reproduce this in isolation, but in a sandbox, I get:

onError TRPCError Error

onError TRPCError Error

, which is what I would expect.

Just wanted to know if anyone has seen something similar; Not sure how this can happen ... thanks

tRPC•3y ago•

5 replies

TkDodo 🔮

TRPCError that has TRPCError as cause

Having some troubles with error handling, specifically, my errors are double-wrapped in a TRPCError.

What I'm doing is basically having a mutation that does:

something: t.procedure
  .input(mySchema)
  .mutation() => Promise.reject(new Error('oh no'))),

something: t.procedure
  .input(mySchema)
  .mutation() => Promise.reject(new Error('oh no'))),

and then, the onError handler has:

onError({ error }) {
  console.log('onError', error.name, error.cause.name)
},

onError({ error }) {
  console.log('onError', error.name, error.cause.name)
},

which logs:

onError TRPCError TRPCError

onError TRPCError TRPCError

. If I then go further with

error.cause.cause.name

error.cause.cause.name

, I can see my error.

I already tried to reproduce this in isolation, but in a sandbox, I get:

onError TRPCError Error

onError TRPCError Error

, which is what I would expect.

Just wanted to know if anyone has seen something similar; Not sure how this can happen ... thanks

TRPCError that has TRPCError as cause

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