cjk-regex/lib/index.js

regular expression for matching CJK text

import { charset } from 'regexp-util';
import unicode from 'unicode-regex';
const cjkLetters = unicode({
    Script: ['Han', 'Katakana', 'Hiragana', 'Hangul', 'Bopomofo'],
    General_Category: [
        'Other_Letter',
        'Letter_Number',
        'Other_Symbol',
        'Modifier_Letter',
    ],
});
const cjkPunctuations = unicode({
    Block: [
        'CJK_Compatibility',
        'CJK_Symbols_And_Punctuation',
        'Vertical_Forms',
        'CJK_Compatibility_Forms',
        'Small_Form_Variants',
        'Halfwidth_And_Fullwidth_Forms',
        'Ideographic_Description_Characters',
        'Kanbun',
        'CJK_Strokes',
        'Enclosed_CJK_Letters_And_Months',
        'Katakana', // All non-punctuation characters in this block are contained in `cjkLetters` because their Script is Katakana.
    ],
}).subtract(cjkLetters);
const cjkAll = charset(cjkLetters, cjkPunctuations);
export function all() {
    return charset(cjkAll);
}
export function letters() {
    return charset(cjkLetters);
}
export function punctuations() {
    return charset(cjkPunctuations);
}