export declare function upcaseFirstChar(str: string): string;
export declare function toTitleCase(str: string): string;
export declare function toSnakeCase(str: string): string;
export declare function toCamelCase(str: string): string;
export declare function toClassCase(str: string): string;
export declare function toPascalCase(str: string): string;
declare function url_join(strArray: string[], { resolve, trailing_slash }?: {
    resolve?: boolean;
    trailing_slash?: boolean | null;
}): string;
type RouterMatch = {
    url: string;
    path: string;
    [key: string]: any;
};
/**
 * (Intelligently) Joins multiple parts of a URL.
 *
 * Accepts strings or ReactRouter `Matches` as URL bits.
 */
export declare function urlJoin(parts: (RouterMatch | string)[], options?: Parameters<typeof url_join>[1]): any;
export declare function urlJoin(...parts: (RouterMatch | string)[]): any;
/**
 * Template string tag to (UN-intelligently) join multiple parts of a URL.
 * This tag does not attempt to resolve absolute vs relative paths, but instead strips duplicate `/` characters
 * if, for example, `http://domain.com/` and `/blah` were joined (resulting in `http://domain.com/blah`).
 *
 * Accepts strings or ReactRouter `Matches` as URL bits.
 */
export declare const url: (literals: TemplateStringsArray, ...placeholders: (RouterMatch | string)[]) => string;
/**
 * Template string tag to split a string into a list of words. Similar to Ruby's `%w[]`
 *
 * ```js
 * words`hello large world` -> ['hello', 'large', 'world']
 * ```
 */
export declare const words: (literals: TemplateStringsArray, ...placeholders: string[]) => string[];
export {};