/**
 * Converts a word in singular form to a pluralized string based on the number
 * of items.
 *
 * @param singular The singular form of the word.
 * @param count The number of items. This determines whether the singular or
 * plural form is used.
 * @param plural The optional plural form of the word. If not provided, the
 * plural form is created by appending an "s" to the singular form.
 * @returns The pluralized string.
 */
export declare function pluralize(singular: string, count: number, plural?: string): string;
/**
 * Capitalizes the first letter of a string.
 *
 * @param str The string to capitalize.
 * @returns The string with the first letter capitalized.
 */
export declare function capitalize(str: string): string;
/**
 * Converts a kebab-case string to camelCase.
 *
 * @param str The kebab-case string to convert.
 * @returns The camelCase string.
 */
export declare function kebabToCamelCase(str: string): string;
/**
 * Converts a camelCase string to snake_case.
 *
 * @param str The camelCase string to convert.
 * @returns The snake_case string.
 */
export declare function camelToSnakeCase(str: string): string;
/**
 * Converts a camelCase string to kebab-case.
 *
 * @param str The camelCase string to convert.
 * @returns The kebab-case string.
 */
export declare function camelToKebabCase(str: string): string;
/**
 * Ensures a string ends with a slash.
 */
export declare function ensureTrailingSlash(path: string): string;
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