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https://github.com/sindresorhus/camelcase
Convert a dash/dot/underscore/space separated string to camelCase: foo-bar → fooBar
https://github.com/sindresorhus/camelcase
Last synced: about 15 hours ago
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Convert a dash/dot/underscore/space separated string to camelCase: foo-bar → fooBar
- Host: GitHub
- URL: https://github.com/sindresorhus/camelcase
- Owner: sindresorhus
- License: mit
- Created: 2014-10-12T10:58:21.000Z (about 10 years ago)
- Default Branch: main
- Last Pushed: 2023-09-29T06:30:04.000Z (about 1 year ago)
- Last Synced: 2024-12-07T19:35:55.096Z (5 days ago)
- Language: JavaScript
- Homepage:
- Size: 77.1 KB
- Stars: 683
- Watchers: 14
- Forks: 94
- Open Issues: 1
-
Metadata Files:
- Readme: readme.md
- Funding: .github/funding.yml
- License: license
- Security: .github/security.md
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README
# camelcase
> Convert a dash/dot/underscore/space separated string to camelCase or PascalCase: `foo-bar` → `fooBar`
Correctly handles Unicode strings.
If you use this on untrusted user input, don't forget to limit the length to something reasonable.
## Install
```sh
npm install camelcase
```
## Usage
```js
import camelCase from 'camelcase';
camelCase('foo-bar');
//=> 'fooBar'
camelCase('foo_bar');
//=> 'fooBar'
camelCase('Foo-Bar');
//=> 'fooBar'
camelCase('розовый_пушистый_единорог');
//=> 'розовыйПушистыйЕдинорог'
camelCase('foo bar');
//=> 'fooBar'
console.log(process.argv[3]);
//=> '--foo-bar'
camelCase(process.argv[3]);
//=> 'fooBar'
camelCase(['foo', 'bar']);
//=> 'fooBar'
camelCase(['__foo__', '--bar']);
//=> 'fooBar'
```
## API
### camelCase(input, options?)
#### input
Type: `string | string[]`
The string to convert to camel case.
#### options
Type: `object`
##### pascalCase
Type: `boolean`\
Default: `false`
Uppercase the first character: `foo-bar` → `FooBar`
```js
import camelCase from 'camelcase';
camelCase('foo-bar', {pascalCase: true});
//=> 'FooBar'
camelCase('foo-bar', {pascalCase: false});
//=> 'fooBar'
```
##### preserveConsecutiveUppercase
Type: `boolean`\
Default: `false`
Preserve consecutive uppercase characters: `foo-BAR` → `FooBAR`
```js
import camelCase from 'camelcase';
camelCase('foo-BAR', {preserveConsecutiveUppercase: true});
//=> 'fooBAR'
camelCase('foo-BAR', {preserveConsecutiveUppercase: false});
//=> 'fooBar'
````
##### locale
Type: `false | string | string[]`\
Default: The host environment’s current locale.
The locale parameter indicates the locale to be used to convert to upper/lower case according to any locale-specific case mappings. If multiple locales are given in an array, the best available locale is used.
```js
import camelCase from 'camelcase';
camelCase('lorem-ipsum', {locale: 'en-US'});
//=> 'loremIpsum'
camelCase('lorem-ipsum', {locale: 'tr-TR'});
//=> 'loremİpsum'
camelCase('lorem-ipsum', {locale: ['en-US', 'en-GB']});
//=> 'loremIpsum'
camelCase('lorem-ipsum', {locale: ['tr', 'TR', 'tr-TR']});
//=> 'loremİpsum'
```
Setting `locale: false` ignores the platform locale and uses the [Unicode Default Case Conversion](https://unicode-org.github.io/icu/userguide/transforms/casemappings.html#simple-single-character-case-mapping) algorithm:
```js
import camelCase from 'camelcase';
// On a platform with `tr-TR`.
camelCase('lorem-ipsum');
//=> 'loremİpsum'
camelCase('lorem-ipsum', {locale: false});
//=> 'loremIpsum'
```
## Related
- [decamelize](https://github.com/sindresorhus/decamelize) - The inverse of this module
- [titleize](https://github.com/sindresorhus/titleize) - Capitalize every word in string
- [humanize-string](https://github.com/sindresorhus/humanize-string) - Convert a camelized/dasherized/underscored string into a humanized one
- [camelcase-keys](https://github.com/sindresorhus/camelcase-keys) - Convert object keys to camel case