source: trip-planner-front/node_modules/string-width/index.js@ bdd6491

Last change on this file since bdd6491 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

  • Property mode set to 100644
File size: 923 bytes
Line 
1'use strict';
2const stripAnsi = require('strip-ansi');
3const isFullwidthCodePoint = require('is-fullwidth-code-point');
4const emojiRegex = require('emoji-regex');
5
6const stringWidth = string => {
7 if (typeof string !== 'string' || string.length === 0) {
8 return 0;
9 }
10
11 string = stripAnsi(string);
12
13 if (string.length === 0) {
14 return 0;
15 }
16
17 string = string.replace(emojiRegex(), ' ');
18
19 let width = 0;
20
21 for (let i = 0; i < string.length; i++) {
22 const code = string.codePointAt(i);
23
24 // Ignore control characters
25 if (code <= 0x1F || (code >= 0x7F && code <= 0x9F)) {
26 continue;
27 }
28
29 // Ignore combining characters
30 if (code >= 0x300 && code <= 0x36F) {
31 continue;
32 }
33
34 // Surrogates
35 if (code > 0xFFFF) {
36 i++;
37 }
38
39 width += isFullwidthCodePoint(code) ? 2 : 1;
40 }
41
42 return width;
43};
44
45module.exports = stringWidth;
46// TODO: remove this in the next major version
47module.exports.default = stringWidth;
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