63 lines
1.4 KiB
Plaintext
63 lines
1.4 KiB
Plaintext
# string-width
|
|
|
|
> Get the visual width of a string - the number of columns required to display it
|
|
|
|
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.
|
|
|
|
Useful to be able to measure the actual width of command-line output.
|
|
|
|
## Install
|
|
|
|
```sh
|
|
npm install string-width
|
|
```
|
|
|
|
## Usage
|
|
|
|
```js
|
|
import stringWidth from 'string-width';
|
|
|
|
stringWidth('a');
|
|
//=> 1
|
|
|
|
stringWidth('古');
|
|
//=> 2
|
|
|
|
stringWidth('\u001B[1m古\u001B[22m');
|
|
//=> 2
|
|
```
|
|
|
|
## API
|
|
|
|
### stringWidth(string, options?)
|
|
|
|
#### string
|
|
|
|
Type: `string`
|
|
|
|
The string to be counted.
|
|
|
|
#### options
|
|
|
|
Type: `object`
|
|
|
|
##### ambiguousIsNarrow
|
|
|
|
Type: `boolean`\
|
|
Default: `true`
|
|
|
|
Count [ambiguous width characters](https://www.unicode.org/reports/tr11/#Ambiguous) as having narrow width (count of 1) instead of wide width (count of 2).
|
|
|
|
##### countAnsiEscapeCodes
|
|
|
|
Type: `boolean`\
|
|
Default: `false`
|
|
|
|
Whether [ANSI escape codes](https://en.wikipedia.org/wiki/ANSI_escape_code) should be counted.
|
|
|
|
## Related
|
|
|
|
- [string-width-cli](https://github.com/sindresorhus/string-width-cli) - CLI for this module
|
|
- [string-length](https://github.com/sindresorhus/string-length) - Get the real length of a string
|
|
- [widest-line](https://github.com/sindresorhus/widest-line) - Get the visual width of the widest line in a string
|