/usr/lib/nodejs/string-width/index.js is in node-string-width 2.1.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 | 'use strict';
const stripAnsi = require('strip-ansi');
const wcwidth = require('wcwidth.js');
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 += wcwidth(code);
}
return width;
};
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