import type { SimpleChanges } from '@angular/core';
export declare function checkTruthAttribute(changes: SimpleChanges, attribute: string, curVal: boolean): boolean;
export declare function validateStringValue<T>(changes: SimpleChanges, attribute: string, options: T[], curVal: T | undefined): T | undefined;
export declare function validateNumberValue(changes: SimpleChanges, attribute: string, curVal: number | undefined): number | undefined;
