Giant blob of minor changes
[dotfiles/.git] / .config / coc / extensions / node_modules / coc-prettier / node_modules / string-width / index.js
1 'use strict';
2 const stripAnsi = require('strip-ansi');
3 const isFullwidthCodePoint = require('is-fullwidth-code-point');
4 const emojiRegex = require('emoji-regex');
5
6 const stringWidth = string => {
7         string = string.replace(emojiRegex(), '  ');
8
9         if (typeof string !== 'string' || string.length === 0) {
10                 return 0;
11         }
12
13         string = stripAnsi(string);
14
15         let width = 0;
16
17         for (let i = 0; i < string.length; i++) {
18                 const code = string.codePointAt(i);
19
20                 // Ignore control characters
21                 if (code <= 0x1F || (code >= 0x7F && code <= 0x9F)) {
22                         continue;
23                 }
24
25                 // Ignore combining characters
26                 if (code >= 0x300 && code <= 0x36F) {
27                         continue;
28                 }
29
30                 // Surrogates
31                 if (code > 0xFFFF) {
32                         i++;
33                 }
34
35                 width += isFullwidthCodePoint(code) ? 2 : 1;
36         }
37
38         return width;
39 };
40
41 module.exports = stringWidth;
42 // TODO: remove this in the next major version
43 module.exports.default = stringWidth;