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1 | # string-width
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2 |
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3 | > Get the visual width of a string - the number of columns required to display it
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4 |
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5 | Some Unicode characters are [fullwidth](https://en.wikipedia.org/wiki/Halfwidth_and_fullwidth_forms) and use double the normal width. [ANSI escape codes](https://en.wikipedia.org/wiki/ANSI_escape_code) are stripped and doesn't affect the width.
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6 |
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7 | Useful to be able to measure the actual width of command-line output.
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8 |
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9 |
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10 | ## Install
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11 |
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12 | ```
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13 | $ npm install string-width
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14 | ```
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15 |
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16 |
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17 | ## Usage
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18 |
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19 | ```js
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20 | const stringWidth = require('string-width');
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21 |
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22 | stringWidth('a');
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23 | //=> 1
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24 |
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25 | stringWidth('古');
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26 | //=> 2
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27 |
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28 | stringWidth('\u001B[1m古\u001B[22m');
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29 | //=> 2
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30 | ```
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31 |
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32 |
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33 | ## Related
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34 |
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35 | - [string-width-cli](https://github.com/sindresorhus/string-width-cli) - CLI for this module
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36 | - [string-length](https://github.com/sindresorhus/string-length) - Get the real length of a string
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37 | - [widest-line](https://github.com/sindresorhus/widest-line) - Get the visual width of the widest line in a string
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38 |
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39 |
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40 | ---
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41 |
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42 | <div align="center">
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43 | <b>
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44 | <a href="https://tidelift.com/subscription/pkg/npm-string-width?utm_source=npm-string-width&utm_medium=referral&utm_campaign=readme">Get professional support for this package with a Tidelift subscription</a>
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45 | </b>
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46 | <br>
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47 | <sub>
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48 | Tidelift helps make open source sustainable for maintainers while giving companies<br>assurances about security, maintenance, and licensing for their dependencies.
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49 | </sub>
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50 | </div>
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