errors.ts

import { TRPCError } from '@trpc/server';

export const TRPC_ERROR_CODE_HTTP_STATUS: Record<TRPCError['code'], number> = {
  PARSE_ERROR: 400,
  BAD_REQUEST: 400,
  NOT_FOUND: 404,
  INTERNAL_SERVER_ERROR: 500,
  UNAUTHORIZED: 401,
  FORBIDDEN: 403,
  TIMEOUT: 408,
  CONFLICT: 409,
  CLIENT_CLOSED_REQUEST: 499,
  PRECONDITION_FAILED: 412,
  PAYLOAD_TOO_LARGE: 413,
  METHOD_NOT_SUPPORTED: 405,
  TOO_MANY_REQUESTS: 429,
  UNPROCESSABLE_CONTENT: 422,
  NOT_IMPLEMENTED: 501,
};

export const HTTP_STATUS_TRPC_ERROR_CODE: Record<number, TRPCError['code']> = {
  400: 'BAD_REQUEST',
  404: 'NOT_FOUND',
  500: 'INTERNAL_SERVER_ERROR',
  401: 'UNAUTHORIZED',
  403: 'FORBIDDEN',
  408: 'TIMEOUT',
  409: 'CONFLICT',
  499: 'CLIENT_CLOSED_REQUEST',
  412: 'PRECONDITION_FAILED',
  413: 'PAYLOAD_TOO_LARGE',
  405: 'METHOD_NOT_SUPPORTED',
  429: 'TOO_MANY_REQUESTS',
  422: 'UNPROCESSABLE_CONTENT',
  501: 'NOT_IMPLEMENTED',
};

export const TRPC_ERROR_CODE_MESSAGE: Record<TRPCError['code'], string> = {
  PARSE_ERROR: 'Parse error',
  BAD_REQUEST: 'Bad request',
  NOT_FOUND: 'Not found',
  INTERNAL_SERVER_ERROR: 'Internal server error',
  UNAUTHORIZED: 'Unauthorized',
  FORBIDDEN: 'Forbidden',
  TIMEOUT: 'Timeout',
  CONFLICT: 'Conflict',
  CLIENT_CLOSED_REQUEST: 'Client closed request',
  PRECONDITION_FAILED: 'Precondition failed',
  PAYLOAD_TOO_LARGE: 'Payload too large',
  METHOD_NOT_SUPPORTED: 'Method not supported',
  TOO_MANY_REQUESTS: 'Too many requests',
  UNPROCESSABLE_CONTENT: 'Unprocessable content',
  NOT_IMPLEMENTED: 'Not implemented',
};

export function getErrorFromUnknown(cause: unknown): TRPCError {
  if (cause instanceof Error && cause.name === 'TRPCError') {
    return cause as TRPCError;
  }

  let errorCause: Error | undefined = undefined;
  let stack: string | undefined = undefined;

  if (cause instanceof Error) {
    errorCause = cause;
    stack = cause.stack;
  }

  const error = new TRPCError({
    message: 'Internal server error',
    code: 'INTERNAL_SERVER_ERROR',
    cause: errorCause,
  });

  if (stack) {
    error.stack = stack;
  }

  return error;
}