yumechi-no-kuni/packages/frontend/src/scripts/nyaize.ts

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/*
* SPDX-FileCopyrightText: syuilo and other misskey contributors
* SPDX-License-Identifier: AGPL-3.0-only
*/
export function nyaize(text: string): string {
return text
// ja-JP
.replaceAll('な', 'にゃ').replaceAll('ナ', 'ニャ').replaceAll('ナ', 'ニャ')
// en-US
.replace(/(?<=n)a/gi, x => x === 'A' ? 'YA' : 'ya')
.replace(/(?<=morn)ing/gi, x => x === 'ING' ? 'YAN' : 'yan')
.replace(/(?<=every)one/gi, x => x === 'ONE' ? 'NYAN' : 'nyan')
// ko-KR
.replace(/[나-낳]/g, match => String.fromCharCode(
match.charCodeAt(0)! + '냐'.charCodeAt(0) - '나'.charCodeAt(0),
))
.replace(/(다$)|(다(?=\.))|(다(?= ))|(다(?=!))|(다(?=\?))/gm, '다냥')
.replace(/(야(?=\?))|(야$)|(야(?= ))/gm, '냥');
}