export declare class StringUtil {
    static allBetween(str: string, prefix: string, suffix: string, stripDelimiters?: boolean): string[];
    static between(str: string, prefix: string, suffix: string, ignoreCase?: boolean): string;
    static camelCase(str: any): string;
    static lowerCamelCase(str: any): string;
    static kebabToCamelCase(str: any): string;
    static kebabToLowerCamelCase(str: any): string;
    static camelToKebabCase(str: any): string;
    static isJson(str: any): boolean;
    static lowercaseFirst(str: string): string;
    static uppercaseFirst(str: string): string;
    static replaceAll(str: string, stringToReplace: string, replacement: string, ignoreCase?: boolean): string;
}
