/**
 * Converts `string` to [camel case](https://en.wikipedia.org/wiki/CamelCase).
 *
 * camelCase('Foo Bar') // => 'fooBar'
 * camelCase('--foo-bar--') // => 'fooBar'
 * camelCase('__FOO_BAR__') // => 'fooBar'
 */
export declare const camelCase: (input: string) => string;