/** @public */
export declare function camelCase(str: string): string;
/**
 * Uppercase first char
 * @public
 */
export declare function ucfirst<T extends string>(str: T): Capitalize<T>;
/**
 * lowercase first char
 * @public
 */
export declare function lcfirst<T extends string>(str: T): Uncapitalize<T>;
/** @public */
export declare function linux_case(str: string): string;
/** @public */
export declare function linux_case_hyphen(str: string): string;
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