`CallbackData.unpack()` logs a warning for omitted optional fields

[mirismaili]

Description

When a CallbackData schema contains optional fields, unpacking payloads that intentionally omit those fields still emits a warning to stderr/stdout, even though the payload is valid.

This makes it difficult to use optional fields as part of a normal flow, because the library produces noisy logs for expected inputs.

Versions

• gramio: 0.8.3
• @gramio/callback-data: 0.1.0

Reproduction

import {CallbackData} from 'gramio'

const payload = new CallbackData('example')
  .string('attemptId')
  .number('firstDigit')
  .number('digit', {optional: true})

const packed = payload.pack({
  attemptId: 'ABCDEFGHIJKLMNOPQRSTUV',
  firstDigit: 7,
})

console.log(packed)

const unpacked = payload.unpack(packed)
console.log(unpacked)

Actual behavior

unpack() succeeds, but an extra warning is logged about the omitted optional field, similar to:

missing digit at 3