/**
 * @file Indefinite-article picker — `determineArticle()` returns `'a'` or
 *   `'an'` based on the leading vowel of a word.
 */
/**
 * Determine the appropriate article (a/an) for a word.
 *
 * @example
 *   ;```typescript
 *   determineArticle('apple') // 'an'
 *   determineArticle('banana') // 'a'
 *   ```
 */
export declare function determineArticle(word: string): string;
