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feat: removeLastHangulCharacter 추가 (#56)
* feat: removeLastHangulCharacter 추가 * Create smooth-tips-yawn.md * chore: 테스트명을 함수 이름과 동일하게 변경
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--- | ||
"es-hangul": minor | ||
--- | ||
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feat: removeLastHangulCharacter 추가 |
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export function excludeLastElement(array: string[]): [string[], string] { | ||
const lastElement = array.at(-1); | ||
return [array.slice(0, -1), lastElement ?? '']; | ||
} |
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import { describe, it, expect } from 'vitest'; | ||
import { removeLastHangulCharacter } from './removeLastHangulCharacter'; | ||
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describe('removeLastHangulCharacter', () => { | ||
it('마지막 문자가 겹받침인 경우 홑받침으로 바꾼다', () => { | ||
expect(removeLastHangulCharacter('안녕하세요 값')).toBe('안녕하세요 갑'); | ||
}); | ||
it('마지막 문자가 초성과 중성의 조합으로 끝날 경우 초성만 남긴다', () => { | ||
expect(removeLastHangulCharacter('프론트엔드')).toBe('프론트엔ㄷ'); | ||
}); | ||
it('마지막 문자가 초성과 중성과 종성의 조합으로 끝날 경우 초성과 중성이 조합된 문자만 남긴다.', () => { | ||
expect(removeLastHangulCharacter('일요일')).toBe('일요이'); | ||
expect(removeLastHangulCharacter('깎')).toBe('까'); | ||
}); | ||
}); |
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import { combineHangulCharacter } from './combineHangulCharacter'; | ||
import { disassembleHangulToGroups } from './disassemble'; | ||
import { excludeLastElement } from './_internal'; | ||
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/** | ||
* @name removeLastHangulCharacter | ||
* @description | ||
* 인자로 주어진 한글 문자열에서 가장 마지막 문자 하나를 제거하여 반환합니다. | ||
* ```typescript | ||
* removeLastHangulCharacter( | ||
* // 한글 문자열 | ||
* words: string | ||
* ): string | ||
* ``` | ||
* @example | ||
* removeLastHangulCharacter('안녕하세요 값') // 안녕하세요 갑 | ||
* removeLastHangulCharacter('프론트엔드') // 프론트엔ㄷ | ||
* removeLastHangulCharacter('일요일') // 일요이 | ||
*/ | ||
export function removeLastHangulCharacter(words: string) { | ||
const disassembedGroups = disassembleHangulToGroups(words); | ||
const lastCharacter = disassembedGroups.at(-1); | ||
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if (lastCharacter == null) { | ||
return ''; | ||
} | ||
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const withoutLastCharacter = disassembedGroups | ||
.filter(v => v !== lastCharacter) | ||
.map(([first, middle, last]) => { | ||
if (middle != null) { | ||
return combineHangulCharacter(first, middle, last); | ||
} | ||
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return first; | ||
}); | ||
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const [[first, middle, last]] = excludeLastElement(lastCharacter); | ||
const result = middle != null ? combineHangulCharacter(first, middle, last) : first; | ||
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return [...withoutLastCharacter, result].join(''); | ||
} |