{"version":"2.0.46","anchor":"date-format-token-validation","canonical_anchor":"date-format-token-validation","heading":"Date Format Token Validation","tier":null,"area":null,"scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.0.46\/e\/date-format-token-validation","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.0.46","markdown":"### Date Format Token Validation\n\n**What:** Implemented validation for deprecated uppercase date format tokens\n\n**Details:**\n\n- Function `vB9() at line 458852` now validates year tokens (Y, YY, YYYY)\n- Warns users when using deprecated uppercase tokens that should be lowercase\n- Prevents confusion between ISO week-numbering years (Y) and calendar years (y)\n- Previously stubbed in v2.0.45 (`vB9 = () => {} at line 458887`), now fully implemented\n- Part of date-fns Unicode token validation system\n- **Evidence**: Implementation added at `vB9() at line 458852`, used in format validation at line 458914"}