/**
 * String-focused utility helpers.
 *
 * @module bquery/core/utils/string
 */
/**
 * Capitalizes the first letter of a string.
 *
 * @param str - The string to capitalize
 * @returns The capitalized string
 *
 * @example
 * ```ts
 * capitalize('hello'); // 'Hello'
 * ```
 */
export declare function capitalize(str: string): string;
/**
 * Converts a string to kebab-case.
 *
 * @param str - The string to convert
 * @returns The kebab-cased string
 *
 * @example
 * ```ts
 * toKebabCase('myVariableName'); // 'my-variable-name'
 * ```
 */
export declare function toKebabCase(str: string): string;
/**
 * Converts a string to camelCase.
 *
 * @param str - The string to convert
 * @returns The camelCased string
 *
 * @example
 * ```ts
 * toCamelCase('my-variable-name'); // 'myVariableName'
 * ```
 */
export declare function toCamelCase(str: string): string;
/**
 * Truncates a string to a maximum length.
 *
 * @param str - The string to truncate
 * @param maxLength - The maximum length
 * @param suffix - The suffix to append when truncating (default: '…')
 * @returns The truncated string
 *
 * @example
 * ```ts
 * truncate('Hello world', 8); // 'Hello w…'
 * ```
 */
export declare function truncate(str: string, maxLength: number, suffix?: string): string;
/**
 * Converts a string to a URL-friendly slug.
 *
 * @param str - The string to slugify
 * @returns The slugified string
 *
 * @example
 * ```ts
 * slugify('Hello, World!'); // 'hello-world'
 * ```
 */
export declare function slugify(str: string): string;
/**
 * Escapes a string for safe usage inside a RegExp.
 *
 * @param str - The string to escape
 * @returns The escaped string
 *
 * @example
 * ```ts
 * escapeRegExp('[a-z]+'); // '\\[a-z\\]+'
 * ```
 */
export declare function escapeRegExp(str: string): string;
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