export declare type FunctionProp<T> = (...args: any[]) => T;
export declare function toBoolean(value: boolean | string): boolean;
export declare function toNumber<D>(value: number | string, fallback: D): number | D;
export declare function toCssPixel(value: number | string): string;
export declare function valueFunctionProp<T>(prop: FunctionProp<T>, ...args: any[]): T;
/**
 * 使用toBoolean让一个属性自动地设置get/set属性
 *
 * 为何不只是使用 @InputBoolean 非要加上 @Input ? 因为AOT 需要 @Input 显示地声明出来
 *
 * @howToUse
 * ```
 * @Input() @InputBoolean() visible: boolean = false;
 *
 * // 就像这样:
 * // @Input()
 * // get visible() { return this.__visibile; }
 * // set visible(value) { this.__visible = value; }
 * // __visible = false;
 * ```
 */
export declare function InputBoolean(): any;
export declare function InputCssPixel(): any;