/**
 * @function classEqualMemoization
 * @param {UmbClassStateData | undefined} previousValue - The previous value to compare.
 * @param {UmbClassStateData | undefined} currentValue - The current value to compare.
 * @returns {boolean} - Returns true if the values are identical.
 * @description - Compares the two values using strict equality.
 */
export declare function classEqualMemoization(previousValue: UmbClassStateData | undefined, currentValue: UmbClassStateData | undefined): boolean;
export interface UmbClassStateData {
    equal(otherClass: this | undefined): boolean;
}