在p5.js javascript类中使用getter和setter的问题，"Script error. (：line 0)“

class Rectangle {
  constructor(width, height) {
    this._width = width;
    this._height = height;
  }

  get width() {
    return this._width;
  }

  set width(value) {
    if (value > 0) {
      this._width = value;
    } else {
      console.error("Width must be a positive number");
    }
  }

  get height() {
    return this._height;
  }

  set height(value) {
    if (value > 0) {
      this._height = value;
    } else {
      console.error("Height must be a positive number");
    }
  }
}

let rectangle = new Rectangle(10, 20);
console.log(rectangle.width); // 输出: 10
console.log(rectangle.height); // 输出: 20

rectangle.width = 30;
rectangle.height = -10; // 输出错误信息: Height must be a positive number

console.log(rectangle.width); // 输出: 30
console.log(rectangle.height); // 输出: 20