/**
 * 限制长度的数据，可以理解为限制了最大长度的队列
 */
export class LimitedArray {
  readonly limit: number = 5;
  public items: any[] = [];

  constructor(limit: number = 5, initial: any[] = []) {
    this.limit = limit;
    initial.forEach((item) => {
      this.push(item);
    });
  }

  push(...items: any[]) {
    items.forEach((item) => {
      this.items.push(item);
      if (this.items.length > this.limit) {
        this.items.shift();
      }
    });
    return this.items.length;
  }
}