如何在typescript中扩展Array<T>

declare global {
  interface Array<T> {
    // 扩展的方法或属性
  }
}

declare global {
  interface Array<T> {
    shuffle(): void;
  }
}

declare global {
  interface Array<T> {
    shuffle(): void;
  }
}

Array.prototype.shuffle = function() {
  for (let i = this.length - 1; i > 0; i--) {
    const j = Math.floor(Math.random() * (i + 1));
    [this[i], this[j]] = [this[j], this[i]];
  }
};

/// <reference path="arrayExtensions.d.ts" />

const numbers: number[] = [1, 2, 3, 4, 5];
numbers.shuffle();
console.log(numbers); // 随机排序后的数组