TypeScript Type Generator — illustrative example

INPUT
Infer a TypeScript draft from these samples: {"id":"A1","nickname":"Ada"} and {"id":"B2"}. Do not assume additional fields.

RESULT
type UserSample = {
  id: string;
  nickname?: string;
};

The absent nickname makes it optional in this sample-based draft. The samples do not establish whether null or other fields are allowed by the actual contract.

REVIEW
Type inference from a small sample cannot establish every possible field. Identify optionality and uncertainty rather than overfitting the sample.

This is a teaching example, not a live execution record.