export {};

declare global {
  interface Array<T> {
    // @strict: The parameter is determined whether the arrays must be exactly the same in content and order of this relationship or simply follow the same requirements.
    equals(array: Array<T>, strict: boolean): boolean;
  }
}

export const ArrayEquals = () => {
  if ([].equals == undefined) {
    Array.prototype.equals = function (array, strict = true) {
      if (!array) return false;

      if (arguments.length == 1) strict = true;

      if (this.length != array.length) return false;

      for (let i = 0; i < this.length; i++) {
        if (this[i] instanceof Array && array[i] instanceof Array) {
          if (!this[i].equals(array[i], strict)) return false;
        } else if (strict && this[i] != array[i]) {
          return false;
        } else if (!strict) {
          return this.sort().equals(array.sort(), true);
        }
      }
      return true;
    };
  }
};