Last change
on this file since 571e0df 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';
|
---|
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 | 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 |
|
---|
45 | module.exports = stringWidth;
|
---|
46 | // TODO: remove this in the next major version
|
---|
47 | module.exports.default = stringWidth;
|
---|
Note:
See
TracBrowser
for help on using the repository browser.