@beenotung/tslib/char.js

utils library in Typescript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.countFullWidthChars = countFullWidthChars;
/** count how many full-width characters in the given string */
function countFullWidthChars(str) {
    let count = 0;
    for (const char of str) {
        const code = char.charCodeAt(0);
        // Full-width characters range
        if ((code >= 0x1100 && code <= 0x115f) || // Hangul Jamo
            (code >= 0x2e80 && code <= 0xa4cf) || // CJK, Yi, etc.
            (code >= 0xac00 && code <= 0xd7a3) || // Hangul Syllables
            (code >= 0xf900 && code <= 0xfaff) || // CJK Compatibility Ideographs
            (code >= 0xfe10 && code <= 0xfe6f) || // Vertical, Compatibility forms
            (code >= 0xff00 && code <= 0xff60) || // Fullwidth ASCII variants
            (code >= 0xffe0 && code <= 0xffe6) // Fullwidth symbol variants
        ) {
            count++;
        }
    }
    return count;
}