From b0dd0fa0a955f0c3b6e8b6b547bf0c829bdf3d06 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vinicius=20Louren=C3=A7o?=
 <12551007+H4ad@users.noreply.github.com>
Date: Mon, 22 Jan 2024 06:38:55 -0300
Subject: [PATCH] Improve performance (#54)

---
 index.js | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/index.js b/index.js
index 4e6906e..c057dec 100644
--- a/index.js
+++ b/index.js
@@ -2,6 +2,8 @@ import stripAnsi from 'strip-ansi';
 import {eastAsianWidth} from 'get-east-asian-width';
 import emojiRegex from 'emoji-regex';
 
+const segmenter = new Intl.Segmenter();
+
 export default function stringWidth(string, options = {}) {
 	if (typeof string !== 'string' || string.length === 0) {
 		return 0;
@@ -21,8 +23,9 @@ export default function stringWidth(string, options = {}) {
 	}
 
 	let width = 0;
+	const eastAsianWidthOptions = {ambiguousAsWide: !ambiguousIsNarrow};
 
-	for (const {segment: character} of new Intl.Segmenter().segment(string)) {
+	for (const {segment: character} of segmenter.segment(string)) {
 		const codePoint = character.codePointAt(0);
 
 		// Ignore control characters
@@ -40,7 +43,7 @@ export default function stringWidth(string, options = {}) {
 			continue;
 		}
 
-		width += eastAsianWidth(codePoint, {ambiguousAsWide: !ambiguousIsNarrow});
+		width += eastAsianWidth(codePoint, eastAsianWidthOptions);
 	}
 
 	return width;