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ryangoree/camelCase.ts

Created November 5, 2023 19:37
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Generic hyphen-case to CamelCase util and type
Raw
camelCase.ts
/**
* Converts a hyphenated string to camel case.
*
* @example
* camelCase('foo-bar') // 'fooBar'
*/
export function camelCase<S>(str: S): CamelCase<S> {
return (
typeof str === 'string'
? str.toLowerCase().replace(/-+([^-])/g, (_, c) => c.toUpperCase())
: str
) as CamelCase<S>;
}
export type CamelCase<S> = S extends `${infer T}-${infer U}`
? `${Lowercase<T>}${Capitalize<CamelCase<U>>}`
: S extends string
? Lowercase<S>
: S;
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