/**
 * Utilities for prompt generation in English
 */
export declare namespace EnglishGrammar {
    /**
     * Choose the article to use in English noun phrases  (a vs an)
     *
     * This is only a partial implementation.
     * See https://www.grammar.com/a-vs-an-when-to-use/
     * @param antecedent - Antecedent
     */
    function article(antecedent: string): "a" | "an";
    /**
     * Render a noun in singular or plural form
     *
     * Both the singular and plural form of the noun must be supplied as arguments.
     *
     * Rule:
     *  * `1 -> singular`
     *  * `else -> plural`  (including zero)
     *
     * @param count - Count
     * @param singular - Singular form
     * @param plural - Plural form
     */
    function renderNoun(count: number | string, singular: string, plural: string): string;
}
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