Spudfella•2mo ago

Router output types not mapping?

I can get it manually, but can't get it with inferRouterOutputs, returns unknown. Any ideas? Attached screenshots showing the issue

2 Replies

Spudfella•2mo ago

works with this, super weird

import { AnyProcedure, inferProcedureOutput, AnyRouter, AnyTRPCClientTypes, TRPCRouterRecord } from '@trpc/server';
import type { inferObservableValue } from '@trpc/server/observable';

export type GetInferenceHelpers<
  TType extends 'input' | 'output',
  TRoot extends AnyTRPCClientTypes,
  TRecord extends TRPCRouterRecord
> = {
  [TKey in keyof TRecord]: TRecord[TKey] extends infer $Value
    ? $Value extends TRPCRouterRecord
      ? GetInferenceHelpers<TType, TRoot, $Value>
      : $Value extends AnyProcedure
      ? inferProcedureOutput<$Value> // inferTransformedProcedureOutput<TRoot, $Value>
      : never
    : never;
};

export type inferRouterOutputs<TRouter extends AnyRouter> = GetInferenceHelpers<
  'output',
  TRouter['_def']['_config']['$types'],
  TRouter['_def']['record']
>;

export type RouterOutput = inferRouterOutputs<Router>;

type SpecificOutput = Router['_def']['record']['createInterfaceDraft']['_def']['$types']['output'];
type TestOutput = RouterOutput['createInterfaceDraft'];

import { AnyProcedure, inferProcedureOutput, AnyRouter, AnyTRPCClientTypes, TRPCRouterRecord } from '@trpc/server';
import type { inferObservableValue } from '@trpc/server/observable';

export type GetInferenceHelpers<
  TType extends 'input' | 'output',
  TRoot extends AnyTRPCClientTypes,
  TRecord extends TRPCRouterRecord
> = {
  [TKey in keyof TRecord]: TRecord[TKey] extends infer $Value
    ? $Value extends TRPCRouterRecord
      ? GetInferenceHelpers<TType, TRoot, $Value>
      : $Value extends AnyProcedure
      ? inferProcedureOutput<$Value> // inferTransformedProcedureOutput<TRoot, $Value>
      : never
    : never;
};

export type inferRouterOutputs<TRouter extends AnyRouter> = GetInferenceHelpers<
  'output',
  TRouter['_def']['_config']['$types'],
  TRouter['_def']['record']
>;

export type RouterOutput = inferRouterOutputs<Router>;

type SpecificOutput = Router['_def']['record']['createInterfaceDraft']['_def']['$types']['output'];
type TestOutput = RouterOutput['createInterfaceDraft'];

Spudfella•2mo ago

anybody know how to get trpc/react working with the above?