import { XY } from "./interfaces";
export declare let snapToGrid: (nr: number) => number;
export declare let toSVGCoordinates: (svgElement: SVGSVGElement, x: number, y: number, transformX: number, transformY: number, scale: number) => XY;
export interface Memoization<Result> {
    /**
     * Manually invalidates the cached outcome.
     */
    invalidate(): void;
    /**
     * If the inputs array matches the inputs array from the previous invocation, this method returns the result of the previous invocation.
     * Otherwise, the calculation function is invoked and its result is cached and returned.
     * Objects in the inputs array are compared using ===.
     * @param inputs - Array of objects that are to be compared using === with the inputs from the previous invocation.
     * These objects are assumed to be immutable values.
     * @param calculation - Function that takes zero arguments and returns an object that can be cached.
     */
    result(inputs: unknown[], calculation: () => Result): Result;
    previousResult(): Result | undefined;
}
export declare function createMemoization<Result>(): Memoization<Result>;