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node_modules/is-fullwidth-code-point/index.js 1.36 KB
2a09d1a4   liuqimichale   添加宜春 天水 宣化
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  'use strict';
  /* eslint-disable yoda */
  module.exports = x => {
  	if (Number.isNaN(x)) {
  		return false;
  	}
  
  	// code points are derived from:
  	// http://www.unix.org/Public/UNIDATA/EastAsianWidth.txt
  	if (
  		x >= 0x1100 && (
  			x <= 0x115f ||  // Hangul Jamo
  			x === 0x2329 || // LEFT-POINTING ANGLE BRACKET
  			x === 0x232a || // RIGHT-POINTING ANGLE BRACKET
  			// CJK Radicals Supplement .. Enclosed CJK Letters and Months
  			(0x2e80 <= x && x <= 0x3247 && x !== 0x303f) ||
  			// Enclosed CJK Letters and Months .. CJK Unified Ideographs Extension A
  			(0x3250 <= x && x <= 0x4dbf) ||
  			// CJK Unified Ideographs .. Yi Radicals
  			(0x4e00 <= x && x <= 0xa4c6) ||
  			// Hangul Jamo Extended-A
  			(0xa960 <= x && x <= 0xa97c) ||
  			// Hangul Syllables
  			(0xac00 <= x && x <= 0xd7a3) ||
  			// CJK Compatibility Ideographs
  			(0xf900 <= x && x <= 0xfaff) ||
  			// Vertical Forms
  			(0xfe10 <= x && x <= 0xfe19) ||
  			// CJK Compatibility Forms .. Small Form Variants
  			(0xfe30 <= x && x <= 0xfe6b) ||
  			// Halfwidth and Fullwidth Forms
  			(0xff01 <= x && x <= 0xff60) ||
  			(0xffe0 <= x && x <= 0xffe6) ||
  			// Kana Supplement
  			(0x1b000 <= x && x <= 0x1b001) ||
  			// Enclosed Ideographic Supplement
  			(0x1f200 <= x && x <= 0x1f251) ||
  			// CJK Unified Ideographs Extension B .. Tertiary Ideographic Plane
  			(0x20000 <= x && x <= 0x3fffd)
  		)
  	) {
  		return true;
  	}
  
  	return false;
  };