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6e9c872
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develop-client_server
master
typescript
fs-words.git
server
lib
node_modules
string-width
index.js
[add] server:lib:node_modules
Christian Fraß
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6e9c872
at 2021-03-08 23:52:07
index.js
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'use strict'; var stripAnsi = require('strip-ansi'); var codePointAt = require('code-point-at'); var isFullwidthCodePoint = require('is-fullwidth-code-point'); // https://github.com/nodejs/io.js/blob/cff7300a578be1b10001f2d967aaedc88aee6402/lib/readline.js#L1345 module.exports = function (str) { if (typeof str !== 'string' || str.length === 0) { return 0; } var width = 0; str = stripAnsi(str); for (var i = 0; i < str.length; i++) { var code = codePointAt(str, i); // ignore control characters if (code <= 0x1f || (code >= 0x7f && code <= 0x9f)) { continue; } // surrogates if (code >= 0x10000) { i++; } if (isFullwidthCodePoint(code)) { width += 2; } else { width++; } } return width; };
