# Function isVocabularyID

- isVocabularyID(value: string): value is VocabularyID

  Type guard: checks that a string looks like an EP vocabulary ID.

  Must be at least 3 characters, contain at least one alphanumeric character, and consist only of letters, digits, hyphens, and underscores.

  Example: `"eurovoc"`.

  #### Parameters

  - value: string

    String to validate

  #### Returns value is VocabularyID

  - Defined in types/ep/branded.ts:119