export declare function IsNull(stringToCheck: string | undefined): boolean;
export declare function IsNotNull(stringToCheck: string | undefined): boolean;
export declare function IsEmpty(stringToCheck: string | undefined): boolean;
export declare function IsNotEmpty(stringToCheck: string | undefined): boolean;
export declare function IsNullOrEmpty(stringToCheck: string | undefined): boolean;
export declare function IsNotNullOrEmpty(stringToCheck: string | undefined): boolean;
export declare function PlaceSpaceBetweenCapitalisedWords(stringToCheck: string): string;
export declare function RemoveTrailingComma(stringToCheck: string): string;
export declare function ToLowerCase(stringToCheck: string): string;
export declare function Includes(stringToCheck: string, valueToCheck: string): boolean;
export declare function NotIncludes(stringToCheck: string, valueToCheck: string): boolean;
export declare function abbreviateString(stringToAbbreviate: string, maxLength: number): string;
export declare const StringExtensions: {
    IsNull: typeof IsNull;
    IsNotNull: typeof IsNotNull;
    IsEmpty: typeof IsEmpty;
    IsNotEmpty: typeof IsNotEmpty;
    IsNullOrEmpty: typeof IsNullOrEmpty;
    IsNotNullOrEmpty: typeof IsNotNullOrEmpty;
    PlaceSpaceBetweenCapitalisedWords: typeof PlaceSpaceBetweenCapitalisedWords;
    RemoveTrailingComma: typeof RemoveTrailingComma;
    ToLowerCase: typeof ToLowerCase;
    Includes: typeof Includes;
    NotIncludes: typeof NotIncludes;
    abbreviateString: typeof abbreviateString;
};
export default StringExtensions;