hangul-search-js/src/index.ts at 1.0.2 · hmmhmmhm/hangul-search-js

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import { disassemble } from 'hangul-js'

const getChars = (keyword: string) => {

const chars: Record<string, number> = {}

disassemble(keyword).map(

(char) =>

(chars[char] = typeof chars[char] !== 'undefined' ? chars[char] + 1 : 1)

)

return chars

}

export const createSearch = (items: string[]) => {

const itemCounts = items.map((item) => getChars(item))

const search = (keyword: string) => {

const keywordCounts = getChars(disassemble(keyword).join(''))

const founds: [string, number][] = []

itemCounts.map((itemCount, index) => {

let matchCount = 0

Object.entries(itemCount).map(([itemKey, itemValue]) => {

Object.entries(keywordCounts).map(([keywordKey, keywordValue]) => {

if (itemKey === keywordKey && itemValue >= keywordValue)

matchCount += keywordValue

})

if (matchCount !== 0) founds.push([items[index], matchCount])

})

return founds.sort((min, max) => max[1] - min[1]).map((found) => found[0])

}

return search

}

export default createSearch