export declare function valueMissing(element: any): boolean;
export declare function tooShort(element: HTMLInputElement): boolean;
export declare function tooLong(element: HTMLInputElement): boolean;
export declare function rangeUnderflow(element: HTMLInputElement): boolean;
export declare function rangeOverflow(element: HTMLInputElement): boolean;
export declare function stepMismatch(element: HTMLInputElement): boolean;
export declare function typeMismatch(element: HTMLInputElement): boolean;
export declare function badInput(element: HTMLInputElement): boolean;
export declare function patternMismatch(element: HTMLInputElement): boolean;