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string-width

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    string-width

Get the visual width of a string - the number of columns required to display it


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Package description

What is string-width?

The string-width npm package is used to calculate and return the visual width of a string - the number of columns required to display it. This is particularly useful when dealing with strings containing characters that may take up more than one column in terminals or monospaced fonts, such as emojis or certain international characters.

What are string-width's main functionalities?

Calculate string width

This feature calculates the visual width of a string. For example, an ASCII character has a width of 1, while many CJK characters have a width of 2. Emojis can also have a width of 2 or more.

const stringWidth = require('string-width');
console.log(stringWidth('古')); // 2
console.log(stringWidth('a')); // 1
console.log(stringWidth('👍')); // 2

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string-width

Get the visual width of a string - the number of columns required to display it

Some Unicode characters are fullwidth and use double the normal width. ANSI escape codes are stripped and doesn't affect the width.

Useful to be able to measure the actual width of command-line output.

Install

$ npm install string-width

Usage

import stringWidth from 'string-width';

stringWidth('a');
//=> 1

stringWidth('古');
//=> 2

stringWidth('\u001B[1m古\u001B[22m');
//=> 2

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Last updated on 16 Apr 2021

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