From 26105034da4fcce7ac883c899d781f016559310d Mon Sep 17 00:00:00 2001
From: ruki <waruqi@gmail.com>
Date: Thu, 8 Nov 2018 00:38:48 +0800
Subject: switch to vuepress

---
 node_modules/string-width/index.js | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 node_modules/string-width/index.js

(limited to 'node_modules/string-width/index.js')

diff --git a/node_modules/string-width/index.js b/node_modules/string-width/index.js
new file mode 100644
index 00000000..bbc49d29
--- /dev/null
+++ b/node_modules/string-width/index.js
@@ -0,0 +1,36 @@
+'use strict';
+const stripAnsi = require('strip-ansi');
+const isFullwidthCodePoint = require('is-fullwidth-code-point');
+
+module.exports = str => {
+	if (typeof str !== 'string' || str.length === 0) {
+		return 0;
+	}
+
+	str = stripAnsi(str);
+
+	let width = 0;
+
+	for (let i = 0; i < str.length; i++) {
+		const code = str.codePointAt(i);
+
+		// Ignore control characters
+		if (code <= 0x1F || (code >= 0x7F && code <= 0x9F)) {
+			continue;
+		}
+
+		// Ignore combining characters
+		if (code >= 0x300 && code <= 0x36F) {
+			continue;
+		}
+
+		// Surrogates
+		if (code > 0xFFFF) {
+			i++;
+		}
+
+		width += isFullwidthCodePoint(code) ? 2 : 1;
+	}
+
+	return width;
+};
-- 
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