declare namespace Ext {
    export class String   {
        public fromCodePoint?: any;
        public addCharacterEntities?(newEntities?: object): void;
        public capitalize?(string?: string): string;
        public createRegex?(value?: string | RegExp, startsWith?: boolean, endsWith?: boolean, ignoreCase?: boolean): RegExp;
        public createVarName?(s?: string): string;
        public ellipsis?(value?: string, length?: number, word?: boolean): string;
        public endsWith?(s?: string, end?: string, ignoreCase?: boolean): void;
        public escape?(string?: string): string;
        public escapeRegex?(string?: string): string;
        public format?(string?: string, values?: any): string;
        public htmlDecode?(value?: string): string;
        public htmlEncode?(value?: string): string;
        public insert?(s?: string, value?: string, index?: number): string;
        public leftPad?(string?: string, size?: number, character?: string): string;
        public repeat?(pattern?: string, count?: number, sep?: string): void;
        public resetCharacterEntities?(): void;
        public splitWords?(words?: string | []): void;
        public startsWith?(s?: string, start?: string, ignoreCase?: boolean): void;
        public toggle?(string?: string, value?: string, other?: string): string;
        public trim?(string?: string): string;
        public uncapitalize?(string?: string): string;
        public urlAppend?(url?: string, string?: string): string;
    }
}