/**
 * Fold text for a Japanese search: width and compatibility forms (NFKC: half-width katakana becomes full-width), hiragana to katakana, and a small kana (`ッ`, `ャ`, `ァ`) to its full-size one. The long-vowel mark `ー` is left as it is, and so is everything that is not kana
 * (letter case is the caller's, as it is for any search). Put it on both sides of a comparison: `foldKana("はっぶる") === foldKana("ハッブル")`, and `ハッブル` is also `ハツブル` after it, so a reader who types a small kana as a full-size one still finds it.
 *
 * @param text - What was typed, or a name to compare it with.
 * @returns The folded text.
 *
 * @example
 * ```ts
 * import { foldKana } from "@johnmorrisdotca/chikyu-earth/satellites";
 *
 * console.log(foldKana("はっぶる") === foldKana("ハッブル"));
 * console.log(foldKana("ほし ー"));
 * ```
 */
export declare function foldKana(text: string): string;