.

node_modules/is-fullwidth-code-point/index.js

@@ -0,0 +1,46 @@
+'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;
+};