/**
 * Checks if the provided value is a class.
 *
 * A value is considered a class if it is a function, has a prototype, and its prototype's constructor is the same as the value itself.
 *
 * @param {any} variable The value to check.
 * @returns {boolean} True if the value is a class, false otherwise.
 * @example
 * ```typescript
 * class MyClass {}
 * console.log(isClass(MyClass)); // Output: true
 * console.log(isClass({})); // Output: false
 * console.log(isClass(function() {})); // Output: false
 * ```
 */
export default function isClass(variable: any): boolean;